does anyone know the title of this manhwa?

it's about this guy who had an unrequited love for his straight friend so he decided to have a rebound and venture into the world of sex. the seme was a much older guy. came to find out his friend, in what i consider, SAd him when the uke was drunk. he even bought ointment for the uke, i remember. the uke doesn't remember that his friend did it. in the end, the uke was happy with the seme and the friend realized his feelings for the uke. the manhwa was predominantly in color blue.