Katy Perry is reportedly ignoring John Mayer.
The 'Dark Horse' singer, who split from the singer-songwriter, 36, in February, refuses to respond to his texts or calls, and has no interest in a rebound romance.
A source close to the 29-year-old star told PEOPLE.com: "Katy will not let romance derail her life right now. She is happy being single. I don't see her getting into another relationship for a very long time. Why would she? She has a fantastic career, a ton of friends and is generally happy with things. She thinks that a relationship will complicate things right now.
"Katy has always been a romantic, but she knows that it doesn't all have to happen immediately. She doesn't need to have the prince on the white horse now. She'll wait, and take care of herself in the meantime."
The 'Roar' hitmaker dyed her hair slime green earlier this week and feels extremely confident following the makeover.
The insider said: "She finally decided, 'f**k it. I'm going to do what I want to do and I don't care what people think. Her hair is an outward statement of her freedom."
Katy is set to kick off her 'Prismatic' world tour on May 8 and is pouring all of her energy into preparing for the shows.
The friend explained: "She's looking for something show-stopping [for her tour]. Something that will grab the attention of everyone. She can't focus on that if she's dating someone. Right now, she needs to have a one-track mind, and it can't be about a boyfriend."

Johnny McDaid says Ed Sheeran is "one of the messiest" people he knows.
The Snow Patrol frontman, who recently moved in with girlfriend Courteney Cox, lived with the 'Lego House' hitmaker in Nashville and Los Angeles in the past, and despite being close friends he is glad they no longer live together.
The 37-year-old rocker told The Hollywood Reporter: "Ed is one of my favourite human beings in the world, and he is quite certainly a genius, but he's also one of the messiest human beings I've ever met in my life. But I think part of that is because he was working so hard."
He added: "He was on tour with us, and he worked crazy hard and did every single radio station, interview, and promo that he could do. He'd come back from a show with Taylor (Swift) at 2am and say 'I've got an idea,' and we would sit at the piano and work for hours. And he's gracious and kind, and knows the energy he gives to people is important. So, as a roommate, messiest guy in the world -- and he needs to take a course in washing dishes -- but worth every single second of it."
Ed previously predicted that Johnny will marry former 'Friends' star Courteney, who has a nine-year-old daughter, Coco, with her ex-husband, David Arquette, in the near future.
He said: "I wouldn't be surprised, but it's still early days.
"They certainly enjoy each other's company and feel very comfortable with each other."

Cameron Diaz is "grateful" to all of her ex-boyfriends.
The 'The Other Woman' actress, who previously dated Justin Timberlake, Jared Leto, Matt Dillon and New York Yankees player Alex Rodriguez, has learnt a lot from them and thinks they helped her to get to know herself better.
The 41-year-old star told the May issue of the US edition of InStyle magazine: "I'm grateful for all of it--whether it was something quick and passing or something that lingered too long. There is not one thing I've been through that hasn't been a lesson that led me to this moment, and I can't believe how great life keeps getting."
The blonde beauty is currently single and doesn't think women should feel under pressure to get married.
She said: "A lot of people chase after it because they've been told, 'This equals happiness.' They chase it, they get it, and they find out, 'Why did I think this was going to make me happy? I'm miserable!' I don't know if anyone is really naturally monogamous. We all have the same instincts as animals. But we live in a society where it's been ingrained in us to do these things."

Josh Duhamel worries about raising his son in Los Angeles.
The 'Safe Haven' actor has a seven-month-old baby boy, Axl, with his Black Eyed Peas star wife Fergie, and doesn't want him or any of their future children to grow up with a sense of entitlement because they have famous parents.
The 41-year-old star told the HuffPost Live: "Growing up in LA, I don't want to raise a kid who feels entitled to anything. I want him to understand the importance of working hard and getting an education."
He jokingly added: "I just don't want to have to bail him out of jail! That's my main goal. Just stay out of jail. Dads, keep your girls off the poles and keep your boys out of jail."
Fergie and Axl temporarily relocated to Austin, Texas, in February while the actor was filming his upcoming movie 'Lost in the Sun'.
He said at the time: "She's here with me now. She's staying with me. We've got a house and the whole thing. We're one happy family in Austin, Texas."
The couple initially had a strict rule about not being apart for more than two weeks but Josh admitted they don't need the rule any more because he wants to be with his family all the time.
He said: "I can't stay away from my boy for that long, or her."

Mike Myers has become a father for the second time.
The 'Shrek' star's wife Kelly Tisdale, 37, gave birth to a baby girl, Sunday Molly, on Friday morning (11.04.14).
Confirming the news, the 50-year-old actor told PEOPLE.com: "We couldn't be happier."
The couple, who tied the knot at a private ceremony in New York City in 2010, announced they were expecting their second child in October, and also have a two-year-old son, Spike.
The 'Austin Powers' star previously admitted he always wanted to be a father.
He told Deadline: "Anyone who tells you fatherhood is the greatest thing that can happen to you, they are understating it. I am the happiest I have ever been in my life.
"I knew I wanted to be a father, I didn't know it was going to be this awesome or that my kid would come out so beautiful and lovely."
Mike began dating café owner Kelly shortly after his divorce from comedy writer Robin Ruzan in 2005.
The actor scrapped an appearance at the Miami International Film Festival in Florida last month to be by his wife's side in the final stages of her pregnancy.

Lindsay Lohan has vowed to stay sober at Coachella.
The 'Mean Girls' star - who recently confessed to having "one glass of wine" since leaving rehab for the sixth time - jetted to Indio, California for the first weekend of the music festival on Friday (11.04.14), despite being urged by friends to avoid the event.
A source told gossip website TMZ.com that the 27-year-old star is aware that going to the festival is a risk to her sobriety, but has promised her friends that she won't fall off the wagon again.
Lindsay was spotted at the festival last year with her brother Cody, 16, just days before checking into her court-ordered treatment program.
A source previously revealed that the troubled starlet is attending the three-day bash with her mother, Dina Lohan, but those close to her are not confident the showbiz matriarch will be able to prevent her daughter from resisting "temptation."
The insider said: "Lindsay should not be going to Coachella.
"And having Dina with her isn't really making anyone feel comfortable that she will be a good chaperone. It's a big alcohol and drug festival and it is the last place that Lindsay should be.
"Lindsay swears that she'll stay sober, but Coachella is a huge party and there are going to be so many temptations for her. Everyone is really worried about her."

Michael Jackson's ex-wife is engaged to his former producer.
Debbie Rowe - who was married to the late 'Thriller' star for just under three years until October 1999 and had children Prince, 17, and Paris, 15, with him - is set to marry porn filmmaker Marc Schaffel, who worked with Michael on his charity single 'What More Can I Give' in 2001.
A source told TMZ.com that Schaffel proposed to the former nurse, 55, three weeks ago, but she only accepted after doctors confirmed on Wednesday (09.04.14) that she does not have terminal cancer and diagnosed her with an auto-immune disease, sarcoidosis.
Debbie confirmed reports she plans to wed her long-time friend and added: "He loves me, knows my kids, loves my kids, and we'll see where this goes."
But she insisted they haven't set a date yet.
A source revealed earlier this week that Debbie wants to be made her children's legal guardian and take responsibility for Michael's son Blanket, 12, who was born via surrogate, as she thinks their grandmother, Katherine Jackson, is too old to care for them properly.
The insider said: "Debbie is deeply concerned about the environment in the Jackson home. She likes Katherine Jackson but believes she has gotten way too old to serve as guardian."
But Michael's siblings Tito, Randy, Jermaine, and Jackie hit back at Debbie on Friday (11.04.14), saying: "[The children] are well loved and well taken care of. We are quite taken back [sic] that Ms. Rowe has decided now to enter their lives, after she abandoned her children many years ago for money
"Our only desire is to see our niece and nephews continue to go on with happy, healthy and safe lives. We will do everything and anything with in our power to help make that happen."

Chris Martin was "very much at ease" at his first public appearance since splitting from Gwyneth Paltrow.
The Coldplay frontman, who announced he and the 'Iron Man 3' star were separating late last month after 10 years of marriage, seemed in great spirits as he helped honour British musician Peter Gabriel at his Rock and Roll Hall of Fame induction ceremony in Brooklyn, New York on Thursday night (10.04.14).
An onlooker told UsMagazine.com: "Chris Martin was smiling and made several jokes when he introduced Peter Gabriel. He seemed very much at ease and didn't seem affected by the split."
The 'Paradise' hitmaker, 37, did not mention his recent personal troubles during his speech and told the crowd: "I couldn't be more thrilled to be here."
After speaking in "glowing terms" about Peter, he joined the 'In Your Eyes" singer onstage to perform 'Washing of the Water.'
Chris, who has daughter Apple, nine, and son Moses, eight, with Gwyneth, was not wearing his wedding ring at the event, despite the Oscar-winning star posting a picture online of herself recently in which she was wearing her ring.
The former couple took a holiday to the Bahamas shortly before news of their separation was announced on Gwyneth's lifestyle website GOOP in a post titled "Conscious Uncoupling".
They wrote: "It is with hearts full of sadness that we have decided to separate.
"We have been working hard for well over a year, some of it together, some of it separated, to see what might have been possible between us, and we have come to the conclusion that while we love each other very much we will remain separate.
"We are, however, and always will be a family, and in many ways we are closer than we have ever been."

Aaron Taylor-Johnson often forgets that his wife is 23 years older than him.
The 23-year-old actor caused controversy when he married 47-year-old director Sam Taylor-Wood in 2012, but he insists she has a "young, beautiful soul."
Speaking about their age difference, the 'Kick-Ass 2' star told the US edition of Men's Health magazine: "It doesn't seem like it. She's such a young, beautiful soul that you wouldn't even know."
The couple have two daughters, Wylda, three, and two-year-old Romy together, and Aaron credits the 'Fifty Shades of Grey' filmmaker for helping him to turn his life around after they met on the set of 'Nowhere Boy' in 2009.
He said: "My life just totally flipped over. It went from a really bad place to, you know... Everything in my life before them was an escape. I went from one job to the next, film after film, just trying to escape."
The British heartthrob is in tip-top shape after training twice a day for his upcoming movie 'Godzilla.'
He previously said: "I train twice a day, in the morning and in the evening. An hour and a half each session. Six days a week. When you start filming, it's f**king tricky. You have to get up at five in the morning to slip in an hour.
"Jim Beaver has worked on a lot of army movies, from 'Black Hawk Down' to 'Battle: Los Angeles.' He's been a marine since he was a kid. He trained me on how to use weapons, wear the gear, the military mind-set... I touch base with him every day. The role is physically demanding - I'm in helicopters, trucks, trains; we're moving giant missiles, stuff like that."

Elle Macpherson admits she couldn't stop crying on her 50th birthday.
The supermodel celebrated the milestone on March 29 and burst into tears after receiving a touching gift from her brother, Brendon.
She told Australia's 'Today Show' on Friday (11.04.14): "I had the most beautiful day. It started off, I looked at my phone and I had an email from my brother and it was a video that he'd made of all of my friends and family that were sending happy birthday wishes and he'd put it to music. I cried and cried and cried and cried, it took me four times before I could really see who was on it, because I couldn't see through the tears. It was such a beautiful gift and unexpected."
The lingerie designer has two sons, Arpad Flynn, 16, and Aurelius, 11, with her ex-partner Arpad Busson, and three stepchildren with her billionaire husband Jeffrey Soffer, and she admits keeping their family unit together requires a lot of travelling.
She explained: "My step-kids live in Aspen, Colorado, my children live in London, my husband lives in Miami, my boys go to school in London. I am living in London at the moment but moving to Miami. A blended family requires patience and a lot of love."
But she added: "I love being married. Anybody that tells you it's no different is lying. I truly believe that there's a huge difference between being married and not married."

Jennie Garth would love to have another baby.
The 42-year-old actress already has three daughters, Luca, 16, Lola, 11, and Fiona, seven, with ex-husband Peter Facinelli, but hasn't ruled out getting pregnant again if she meets the right guy.
The blonde beauty, who is currently single, said: "I love being pregnant, and I love making babies. I loved getting fat!
"I want to do it again, but I need a man for that, so yeah, that's not gonna happen. Just bringing a being into this world is crazy wild! It's like an exchange you can't compare to any other. It's like when ET connected with Elliot, you know, where they got sick when they were with each other and felt each other's feelings."
Jennie is still very close to her former 'Beverly Hills 90210' co-star Tori Spelling, who was left devastated when her husband Dean McDermott checked into rehab in January after being accused of cheating on her with multiple women.
The blonde beauty recently teamed up with Tori again for a pilot TV series, 'Mystery Girls.'
She told UsMagazine.com: "We're like girly girls. We'll give each other facials or gossip, anything. There's nothing off limits! We will stop a meeting, as executive producers, we will stop a meeting dead in its tracks to find out some good gossip! It was like no time had passed and we were the same exact. I was thinking about it the other day -- we're older now but it was like no time had passed. We're sort of like those timeless friends."

Jennifer Garner used to babysit for Stephen Colbert.
The 41-year-old actress celebrated the news that comedian Stephen will take over 'The Late Show' when David Letterman retires next year by sharing an anecdote about the star.
She revealed: "I used to baby sit for Stephen Colbert.
"Stephen and I we were guest stars in 'Spin City' at the same time forever ago and I had maybe six lines but he had four. So we had all of this time to hang out together because it's not like they said, 'Oh, we're done with these two fools, let's let them go for the day' ... they just forgot about us.
"So we were just hanging out and then at the end he was like, 'You seem... normal. Would you babysit for me?' So my roommate and I babysat for little Madeline."
Jennifer, who now has three kids - Violet, eight, Seraphina, four, and two-year-old Samuel - of her own with husband Ben Affleck admits the job wasn't well paid.
Appearing on 'The Daily Show with Jon Stewart' last night (10.04.14), she quipped: "I was not making 10 bucks an hour, I am sure of it. He is so cheap. I'm sure he still owes me - and he never tipped!"
'The Daily Show' is on at midnight tonight on Comedy Central Extra.