Prince Harry and Meghan Markle are "extremely serious about each other and massively loved-up".
The 32-year-old royal is said to have inundated the ‘Suits’ actress with text messages until she agreed to go on a date with him after they met at a charity bash in May, and they have since been on a number of romantic outings and saw each other twice last month.
One friend said: "They are the real deal. He definitely pursued her and besieged her with texts until she agreed to a date.
"They went out with a group of friends to Soho House in London in early July, followed by two dates by themselves where Harry swept her off her feet. By August it was a serious."
The flame-haired prince is said to have fallen "head over heels" for the 35-year-old stunner – who was previously married to film producer Trevor Engelson from 2011 to 2013 – and the feeling is said to be mutual.
The pal added to The Sun newspaper: "He is very full-on but she was going through quite a tough time with her previous boyfriend and she was very flattered.
"She couldn’t contain her excitement, but once she got back from London she became very secretive. It was then that it changed from them just ‘seeing each other’ to boyfriend and girlfriend.
"He’s head over heels and she feels the same."