As we reported yesterday, Serena van der Woodsen (Blake Lively) is getting a new love interest - and one that doesn't even share a half sibling with her.

Now, E! Online has revealed the actor who will play the role.

Armie Hammer - who has also been cast as the Devil's son, Morgan, on Reaper - will join Gossip Girl at the end of the season to play Serena's new beau.

The CW confirmed Hammer's casting yesterday afternoon.

The preliminary details on his steamy affair with Serena are as follows: Gabriel Serrano is a European socialite, a man unlike any Serena has dated before.

Gabriel will actually be dating Serena's socialite pal, Poppy Lifton (Tamara Feldman), before he moves on to her. Sounds like a scandalous love triangle worthy of the Upper East Side - and his character's drama doesn't stop there.

Armie Hammer will appear on three episodes toward the end of Season Two as a part of the Anne Hathaway-esque story line. Hathaway's Italian businessman beau was arrested and jailed for racketeering and fraud last year ...

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