"Secret Girlfriend" premiered last night on Comedy Central. In honor of the show, the lovely folks at BuzzFeed rounded up 10 secret girlfriends throughout time, from Marilyn Monroe to Stephanie Birkitt. And again, this has inspired us to look at the dude side of things, since it's not just men getting some under the radar. Here's a look at 10 notorious secret boyfriends, starting with Tom Cruise, whom Cher dated behind closed doors in 1983, right after "Risky Business." We have no idea why she would do such a thing. Did she not see the undies scene? [People]