Qinxy's Favorite

I just had the most vivid flashback of a manga so mc is asexual or on the ace spectrum and the main lead is a real freak, they studied theatre I think, they get together and try to figure out their sex life but the then mc give ml a hj and discovers that while he is asexual he likes pleasuring ml. Or I think the freak was the mc idk. Please please please help me find this