Twilight stars Kristen Stewart and Robert Pattinson's romance is one of the biggest open secrets in Hollywood. They've never exactly kept their flirtations out of the public eye, but they've also never confirmed that they're dating. Until now.

Kristen is on the cover of Elle's June 2012 issue. According to E!, during the interview, she made a comment about the book Bel Ami, which Robert is starring in a movie adaptation of.

"Oh my God, my fing boyfriend just did this movie!" Kristen exclaimed.

OK. So, she doesn't actually say she means Robert. Maybe she's dating one of the other actors in the movie...

But, come on. She totally means Robert. Why hide it, Kristen?!

Source: Elle via E!

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