Radar has revealed the identity of Kendra Wilkinson's sex tape co-star. Apparently, his name is Justin, and they say that as if they're announcing someone famous. Who the hell is Justin? Who cares? All we know is that he dated Kendra from when she graduated high school in 2003 until she moved into the Playboy Mansion in 2004. Anyway, Kendra's all pretend upset because even though she hired a law firm to sell the tape in 2008, now is just an inconvenient time for it to be released. [Radar] But isn't it funny how the lesser-known co-stars of sex tapes often remain outside of the controversy? Well, we did a little digging and found some totally mind-blowing facts about these sex-tape underdogs.