I've seen somwhere a yaoi manga about a band. Each of the band members have their story and some kind of a romance. There was also a guy who was addicted to sex (but rather with women) and then he found his ideal partner who was a guy. Well he kind of molested him. Anyone has recognized this manga? I thought it was Shimotsuki Karen's manga but it appears to be not. I remember the artwork was very nice.

maybe... Non Tea Room?

I foud it. It was a short story in the 6th chapter of KOU'UN NO RIHATSUSHI. Thanks for help anyway.