They were in a physical relationship (sex friends) and not lovers until the very last chapter,so Ei didn't literally cheat.Ei sleeps with random persons but never with the same person for a second time.Gin was the exclusive one here,he slept with Him multiple times,but there was nothing more than that!!
Umm,guess it's a weird plot!
But Ei always knew how Gin tought about him and Gin tought they were lovers so he even call "lover" in the all coworker of the Ei and when Ei talking about Gin he told everyone "he is my lover.'' Actually no. They were in a relationship already but only Gin confessed his feeling and told him "I will wait for you until you say that you love me" but guess what.. Ei already fooling around multiple people ヽ(`Д´)ﾉ
If they were in physical relationship only then why f***ing Ei checked uke's ass to see if he slept with other men in those years ????
Cheating is not just a breach in relationship contracts. Sometimes cheating is more than that. For example Ei promised to protect gin. He protected him from homophobia but he hurted him by making him watch him having one night stands. Gin was too pitiful of a uke
Ume was the stupidest character I have ever seen. Really? I dont care how uke choose the guys which one only resembles uke, in the end he cheated right? Woa.. Really.. And uke forguve him like that?? I wish uke did s*x with somone else too. So seme will understand what he did to uke. Uke is a angel and he deffinetly deserves better than that sh*tty seme(๑•ㅂ•)و✧