Kanye West won't watch Kim Kardashian's sex tape.

The rapper has been dating the beautiful socialite since April after being friends with her for years. Before their relationship became romantic, Kanye would not look at the X-rated footage the reality TV star recorded with her ex-boyfriend Ray J - which was released as a DVD entitled Kim Kardashian Superstar in 2007 - and now they're an item he wants to block it from his mind.

"For all his bad-boy image, he's quite old-fashioned and [while they were still just friends] he thought it inappropriate to view Kim's tape. Now that they are a couple, there's no way Kanye's ever going to look at it," a source said.

The "Gotta Have It" hitmaker is so sensitive about the sex tape - which features Kim and Ray J participating in a variety of erotic acts - he won't even let anyone in his entourage or circle of friends talk about it.

"When some of his buddies were teasing him about it over a few beers just recently, he went crazy and told them in no uncertain terms that the subject was completely off limits. At first they thought he was joking, but he was deadly serious. Kanye never, ever wants to see the tape, and he has banned anyone in his entourage from even talking about it," the source added.

This week, Kim has credited her eight-year friendship with Kanye as the reason why their relationship has been so great so far. "Me and Kanye spent time as friends first and I see a real benefit in that. Once a relationship goes past the honeymoon phase, you need the strong base of friendship to keep it working," the reality star said.