Gossip Girl star Penn Badgley marries his girlfriend Domino Kirke in a quiet ceremony

Penn Badgley is a married man.

The Gossip Girl star tied the knot with girlfriend of three years Domino Kirke — whose sisters are actresses Jemima and Lola Kirke — in a courthouse on Monday in Brooklyn.

The actor dated his Gossip Girl co-star Blake Lively (who is now married to Ryan Reynolds) for three years. He also dated Zoe Kravitz.

According to posts on social media, Badgley made it official with Kirke (whose sisters are Girls star Jemima Kirke and Lola Kirke, who has been in films like Gone Girl) in front of family members and friends.

“When someone gets married in a courthouse, it’s really an open invitation to everyone but the beautiful bride to explore all that fashion has to offer,” Lola Kirke added alongside an Instagram photo with Domino and Jemima, who was dressed casually in wide-leg jeans and a T-shirt. “Here, I try a look simply called ‘Pants,’ as Cassius goes for ‘That Dude from #incubus’ and Jemima experiments with ‘Off to Therapy!’ Congratulations @dominokirke. We love you.”

The bride shared a happily-ever-after photo:

The cake at the wedding was gluten free and organic.

Badgley has been dating Domino, who has a child from a previous relationship, since 2014.