This got long, there's a lot of gay in my clan and this isn't even all of it. Probably 90% of my dragons could fit the thread but I'll choose the ones who are actively attached to others in some fashion.
Byleistr has a massive fangirl crush on her mentor Bedi; they're both assassins and Bedi showed Byleistr the ropes long ago, which has led to Byleistr deeply admiring and trying to emulate her. For her part, Bedi returns Byleistr's feelings but doesn't feel it'd be appropriate to act on them, despite them now being peers.
In a case of rather unhealthy attachments, we have Hafgrimr and Algol. Hafgrimr is a reincarnation of an ancient sea monster reborn in the body of a dragon, kept prisoner in the clan's Occult Library. Algol is (was?) a scholar studying him, but his obsessive admiration for and interest in Hafgrimr got so great that he resorted to turning himself into an ancient dragon to get closer to him. Now they're both confined in the Library, and still figuring out how to get along, though Hafgrimr admittedly prefers Algol as a cohort instead of a researcher.
Gilda and Bec are the server and bouncer respectively of the Marigold Bar, and they're in the courting stages of a budding relationship. Bec is very protective of Gilda when the drinkers get a little too rowdy, and Gilda is remarkably admiring of Bec's courage and strength. The fact that Bec has a considerable soft side and Gilda is hard-headedly stubborn under all her sweetness is only bringing them closer.
The band of smugglers who are aligned with the clan form a kind of casual polycule among the four original members (younger members Carmina and Laisren consider themselves the originals' children). Sometimes they pair off, sometimes they see other partners, but the four of them always return to one another in some fashion. Their relationship isn't the most peaceful, but despite their constant bickering, it's stable.
Finally, some fandragons (very recently acquired, so these are their scries):
Connor and Hank from Detroit: Become Human. The fact that Connor is an android and Hank is flesh and blood doesn't stop them from being in a relationship that's highly charged with emotion but heavily based in their mutual trust. They're clingy and they like it that way.