We can call Penn Badgley a lot of things — newlywed, for example — but “Lonely Boy” isn’t one of them.

E! News is reporting that the former Gossip Girl star tied the knot with Domino Kirke, Girls star Jemima Kirke‘s sister, in a hush-hush courthouse ceremony Monday in Brooklyn.

Badgley looked polished in a navy-blue suit, while the English-American musician and birth doula was absolutely breathtaking in an embroidered white dress with half sleeves.

Domino and Jemima’s other sister, actress and badass feminist kween Lola Kirke, took to Instagram to share a photo of the three siblings, along with Domino’s son Cassius.

“Here, I try a look simply called ‘Pants,’ as Cassius goes for ‘That Dude from #incubus’ and Jemima experiments with ‘Off to Therapy!’ ” she added cheekily. “Congratulations @dominokirke. We love you.”

Jemima couldn’t help chiming in on Twitter to express her love in a way only a sibling can get away with.

“Congratulations ya shitheads!” she wrote. “@PennBadgley and @DominoKirke it’s all downhill from here. In a good way!”

We love this family’s dynamic, and think Badgley just married into a lifetime of fun.

There are very few photos of the couple together, but here’s one Domino snapped of Penn at the women’s march. Girl snagged herself a feminist husband. 🙂

All the best wishes for a forever love that lasts even longer than Blair and Chuck’s, and Serena and Dan’s. XOXO, us!