Yaoi help

There is a yaoi Manga where the uke's lover is a playboy and is always having affairs. The uke tolerates it because he is in love with the seme. The seme takes advantage of the uke's dedication towards him by making him do things for him, such as picking him up from a bar when he's drunk or something. Then a love rival shows up making the uke's feelings waver as the rival notices the uke's hesitation staying with the seme. The uke eventually gets together with the love rival (who dyes his hair and turns him into a different looking person) leaving the seme behind where he practically becomes useless without the uke around. The seme realizes that the uke didn't really need him, but he needed the uke so he ran after the uke understanding the importance of losing a person you love. The love rival genuinely loves the uke, but the uke still couldn't get over his love for the seme, so when the seme urged the uke to come back to him he did. It ends with the seme picking up the uke from a get together with his friends and wondering how long he will be devoted to the uke, but is fine with cherishing that moment of happiness as a changed man in his life. Phew long summary. I know the story as one can tell, but I forgot the name.