In the first interview, since his fling with Lindsay Lohan [photos], snowboard daredevil Riley Giles tells a UK paper how Lindsay craved nights of marathon lovemaking.
"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," Giles says.
"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. She'd have worn out most guys."
Giles met Lohan while they were both being treated for drug addiction at a rehab centre in Utah. "The chemistry between us was so strong we couldn't help ourselves," he says.
"The first time we had sex I couldn't believe I was looking down at Lindsay Lohan naked. We'd barely gotten through the door when we just ripped each other's clothes off. Lindsay is so hot. She has a great body. Her backside is fantastic, perfect, all plump and round."
"She has great curves but her belly is nice and flat and toned. We couldn't get enough of each other."
He thinks she used sex as a substitute for the drugs she was used to while partying: "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."
"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."
But Giles says their relationship changed when Mean Girls star Lindsay got back to Los Angeles to pick up her career: "Her whole attitude changed about three weeks after she got back there. 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."
In the first interview, since his fling with 
