“Justin was very clear with Jessica that he didn’t want to be in a serious relationship with her anymore where he wasn’t able to date other people,” says the insider. “Jessica took the news very hard, but once she calmed down and they started talking again, he convinced her to stay friends who hook up, without all the pressure of a relationship.”

“At first she was very reluctant, but she missed him a lot and so she decided to give it a try even though it wasn’t exactly how she wanted things to be,” the source explains. “She’s still in love with him, and they are still attracted to each other, so it would have been difficult for them to quit each other cold turkey.”

“Justin gets the best of both worlds,” says the source. “He doesn’t have to lose Jess as a lover or a friend, but he’s free to explore other [relationships].”

“He was so vain,” his ex tells Us Weekly. “He had not one, but two painted portraits of himself as a centaur. You know, the half man, half horse figure?”Adds the ex, “It was ridiculous.”

“He’ll call me and take his anger out on me. He has ‘mantrums.’ I shouldn’t have to put up with being emotionally abused. I cry and say, ‘Why are you so mean to me?’ Sometimes he has trouble with the truth and he will dance and dance around his lies. He’s like Jekyll and Hyde. But I still love him.

I met Jon in a bubble. I’d never seen the show. I had no idea. People judge me before they meet me. I get threats everyday. I get called a home wrecker and a fat whore. People will stare or point. It gets worse everyday.

I don’t want to leave him all alone. At the end of the day, I love him but I dislike him at times. When I love someone I would never hurt them.”

Amazingly the randy telly star, famed for dating a string of beautiful girls, could finally give up his womanizing for dark-haired Katy, 24. Pals say he is besotted with the I Kissed A Girl singer, who is currently at Paris Fashion Week, and no longer has eyes for anyone else. Speaking exclusively to The Sun at his £2million home in Hampstead, North London, Russell said: “I think I’m in love.” But asked about his nights of passion with Katy, he said coyly: “I don’t think I should be drawn on that.”