Ok. So he would know Remington through Lyra! They're still roomies for now, so if he ever comes over at all, she's around! She's also more recently come out about her own sexuality, so maybe they could have bonded over that, too! She would really like him, I think!
And he's going to need to be friends with Calliope, too! For reasons. lol. They can bond over the infinite tragedy that is their dreams. She will likely also frequent the shop once they discover it! She's all about the tea and coffee. She was also born and raised in DC!
I feel like he has a lot in common with Dottie and could probably get along with her because of that! So they should probably be bros.
Morrighan, Oceana, and Zoya are all likely to frequent the shop. And pretty much any of mine could have run across him the last few years in Dunhaven, so there's that! If I'm missing anything vitally important, please point it out to me!