Update (November 19, 2013): Looks like Leighton Meester and Adam Brody are definitely walking down the aisle in the foreseeable future — People has confirmed that the Oranges co-stars are indeed engaged.

It's only fitting that the next movie for which the two lovebirds are co-starring is titled Life Partners — a comedy about two co-dependent best friends, one straight girl and one lesbian, and the man who comes between them.

Congrats to these new life partners!

Original story (November 19, 2013):

After years of dating Hollywood hunks like Garrett Hedlund and Sebastian Stan, it looks like Leighton Meester has finally been claimed for good. According to Star magazine, the former Gossip Girl actress is engaged to The OC’s Adam Brody!

“Leighton and Adam are crazy about each other” a source revealed to the mag. “[They’ve] talked about getting married eventually, but she had no idea he would propose so soon! It was the surprise of her life and she’s ecstatic!”

Leighton and Adam first got close back in 2011 when they co-starred in the comedy The Oranges. Though the duo didn’t immediately start dating — Leighton, at the time, was linked to her Country Strong co-star Garrett Hedlund and actor Aaron Himelstein — they confirmed their status as a couple in February of this year.

While we couldn’t be more excited to see this attractive duo take a walk down the aisle, we must admit, we’re a bit surprised. After all, it was Leighton herself who said she wasn’t so keen on the idea of getting hitched. (Then again, it only takes one guy to change your mind!)

“Right now their plan is to get married next summer,” the source explains. “They are still deciding if they want a destination wedding or if they’ll marry in Southern California.”

While the couple don’t plan on having children in the immediate future, we do hope they get a jump on it. Mini Blair Waldorfs and little Seth Cohens? Um, yes please!

Source: StarPeople

Jager Weatherby is a Photo Editor at Wetpaint Entertainment and our resident expert on all things fashion, Dawson's Creek, and Ian Somerhalder. Follow her on Twitter and Google+!