i headcanon caelus as someone who's extremely touch starved without even realizing it himself and Adoring simple physical contact so i fuck heavy with this idea actually.

dan heng softly carressing his cheek and caelus instinctively pressing his face into his palm and rubbing himself against dan heng's calloused hand
dan heng petting caelus head and him preening under it pushing against dan heng's hand with his head, disheveling his soft hair in the process, asking for more without even saying anything
most of the times he'd rather say it out loud and ask for more pets and dan heng is always happy to provide