It’s the ultimate teenage mash-up fantasy come to life: Gossip Girl‘s Leighton Meester and The O.C.’s Adam Brody are engaged.

The cute couple met while filming The Oranges in 2011 and only began dating earlier this year.

Meester, 27, previously dated her Gossip Girl co-star Sebastian Stan for a year, while Brody, 33, was in a relationship with O.C. co-star Rachel Bilson for three years between 2003 and 2006.

They will next appear on screen together in the comedy Life Partners, due to hit cinemas next year.

“I haven’t been in a lot of relationships, but I’ve been in love,” Meester said in an interview last year.

Congratulations to the happy couple!