the alter is my hips

"He would never say it to Moth directly, but there were times when Moth's eyes would soften around him and a genuine smile would appear on his face. Those small moments often caused a strange fluttering in Dean's chest. Looking down at Moth now, all tension gone from his face, unconsciously pressing back into Dean's chest, Dean felt that fluttering appear in twofold. He lightly bit his lip. Fuck."

aka dean finds out moth has a butterfly tattoo and is completely normal and sane about it