Super Puppy Love: A Super Sons fic
Synopsis: Damian and Jon had gotten the hang of working together as the Super Sons. Just as Damian thought that he could make this team-up work, he runs into an unexpected snag: Jon has a crush on him.
Update: I made a sort of epilogue/continuation of this as a response to a story prompt. Check it out here! Super Puppy Love: Jon actually explains why there’s a naked Damian in his bed.