I eat MY BOYFRIENDS skin, in addition to my own

Hi All!! First time posting, but y'all seem like super-understanding and relatable people. So, here goes: I do the same things y'all do. I eat my white/blackheads, dandruff, scabs, ect... BUT!! My real question is, why do I feel the compulsion to eat my man's stuff? You know whats funny? He doesn't even know!! I "groom" him and eat it behind his back. He lets me groom him while we watch tv. His dandruff flakes, his scabs, his ear flakes, all delightful. I'll post more, but this is all I wanna post for now. I'm feeling y'all out...