It's a match made in teen TV heaven. Leighton Meester, who played Blair Waldorf on Gossip Girl, and Adam Brody, who played Seth Cohen on The O.C., were first linked back in 2011. News of their romance sent fans into a frenzy. Since then, they've quietly married, co-starred in a few films, and have now reportedly welcomed their second child, a son, together. Below, a rewind on their low-key love, including what they've said about each other's iconic CW characters.