Unlike her wild TV counterpart Serena, Gossip Girl star Blake Lively admits in the new issue of Marie Claire (UK) that she didn't date until she was 17.

"I didn't have my first boyfriend until I was 17," says the L.A. native, 23.

Blake also admits she has only ever kissed three boys in her whole life. One can assume current co-star and beau Penn Badgley is the third of three.

She said: "I didn't get around too much. Like I said, I didn't have a boyfriend until I was 17." Here's the gorgeous actress on the magazine's cover:

Steve Marsi is the Managing Editor of TV Fanatic. Follow him on Google+ or email him here.