Kourtney Kardashian's boyfriend reportedly used to steal from girls he slept with.

Businessman Scott Disick has been dating the 'Keeping Up With The Kardashians' star for five years, however, he allegedly got a thrill out of taking his conquest's belongings as a teenager.

Former friend of Scott's, model Brittany Reichek, told America's Star magazine: ''It's true that Scott began videotaping himself having sex with girls when he was in his late teens, and then he'd steal from them!

''Scott and one of his buddies had a system. They would pass themselves off as wealthy stockbrokers, pick up girls in the clubs in the Hamptons, get drunk with them, then take them back to their parents' homes and claim the houses were their own.''

Apparently the father of Kourtney's two children, newborn daughter Penelope Scotland and son Mason, two, stole belongings including mobile phones, cameras, cash and even credit cards.

She continued: ''When the time was right, Scott and his friend would go through their handbags and steal just about anything they could get their hands on.''

Although no charges were ever filed against the pair in connection with their alleged scam, Brittany claims that Scott and his friend ''videotaped girls and stole from them more than 50 times in the years I was around him. I think Scott got as good a high just from the actual things he stole.''