It's not just the women of The Bachelor with skeletons in their closets: Jake Pavelka's past isn't so squeaky clean, either.

In this week's Hot Stuff, Senior Editor Ian Drew reveals the accusations of a former business partner of Pavelka, 32 -- plus even more surprises about final rose contestant Vienna Girardi.

That's not all: single lady Mary-Kate Olsen (she split from Nate Lowman "a while" ago, her rep told was spotted "making out" at a London party with a hot movie star. Who was it...?

Drew also says who's scrambling for the Dancing With the Stars hostess gig recently vacated by Samantha Harris (Nick Lachey's girl is in the running!); there's also new drama surrounding LeAnne Rimes and beau Eddie Cibrian's young kids.

Catch up on this week's Hot Stuff -- watch the video now!