Gossip Girl star Leighton Meester and her beau, Sebastian Stan, are taking the next step and getting married, the New York Post is reporting this afternoon.

A source close to the starlet said that the inseparable lovers are engaged - and Leighton and Sebastian broke the news on their "secret" Facebook pages.

Meester and Stan have been dating since they met on the set of Gossip Girl last year, when he played a character who was featured in two early episodes.

Her rep had "no comment" on the engagement rumors.

Is Leighton Meester engaged to beau Sebastian Stan?

No one in her camp has issued any statement on the Leighton Meester sex tape - allegedly made when she was 18, a few years ago - to this point, either.

The supposed tape is allegedly sparking quite the bidding war online. From some of the hot photos we've seen circulating it certainly looks like it's her.