Gossip Girl Leighton Meester is Engaged

"Gossip Girl" star Leighton Meester, 23, and actor Sebastian Stan, 25, are reportedly engaged after announcing their marriage plans on Facebook.com The two have been dating ever since Stan appeared on "Gossip Girls" last year, and are now ready to make the relationship official by getting married.

According to Page Six, both stars are said to have changed their Facebook relationship statuses to "engaged" this week. Meester's rep has only added fuel to the fire by refusing to comment.

News of the engagement comes just days after a sex tape starring Meester sparked a bidding war between online porn sites, with offers for it exceeding $1 million. The footage is said to show a younger Meester performing a striptease for a former boyfriend, as well as a number of sensual and erotic acts.