HELP NAME??

Please Help me find the Name of this manhwas/Manga idk anymore. IT was about to Guys (Yaoi/bl) and idk for Sure anymore but i think the top was fully gay also working as a Playboy i think. And He Met the bottom, bottom was straight but due to Them having sex a few Times He got a Bit confused. Top already developed Feelings for him. Then top went to a Club or bar with His colleagues and friends and Met the bottom having Sex with a Girl, i think she seduced him but He didnt completely say No. They did this in a room of Glass i think bec everyone could See Them, top too went to him got angry and at the end they probably got togrther. PLEASE I WANNA REAREAD BUT DONT KNOW THE NAME I HOPE ANYONE KNOWS IT!!