Lindsay Lohan has been described as a “nymphomaniac” and “wild in bed” by ex-boyfriend Riley Giles.

A month after the former rehab patients broke up, Riley has revealed all about his relationship with the Mean Girls star, claiming she’s been using sex to beat her drug habit.

He told the News of the World: “When you orgasm, your endorphins shoot up and it becomes a massive natural high. If you have an addictive personality like Lindsay you need that to replace the highs you got from taking drugs all the time. Sex became a key part of her recovery.”

“Lindsay’s definitely a nymphomaniac. She’s wild in bed. We’d have sex a couple of times in the day and then go to it through the night.”

“We once did it four times in a row straight. That was crazy. Lindsay was insatiable. She’d demand sex again and again. We’d go at it for hours.”

But he insists it wasn’t just about sex between the two of them: “Lindsay would tell me she loved me and I’d say that to her, too. And I don’t say that to a lot of girls.”

“She told me she’d only ever had three serious boyfriends - and I’m one of them. We even planned on getting a house and living together out here in Utah.”

“We were together every day for a month and after that I could tell she really loved me a lot by the way she cried and cried when we had to say goodbye at the airport.”

“Her whole attitude changed about three weeks after she got back [to LA]. It went from ‘I want to move to Utah’ to ‘Oh, I love LA so much I don’t ever want to leave.’”

“She’s a great person but it’s hard to have a girlfriend in LA who’s surrounded by movie stars and doing whatever she wants. Sure, her friends were all nice to me. But anyone can put on a face and I don’t know how sincere they were. There are a lot of fakes in LA.

“And sadly, I think people would rather see Lindsay with a movie star than some snowboarding guy.”