Well that is bc the trust was broken. Dunno about you but I could never forgive sb who cheated once and he did it multiple fckn times. Btw his reflection was not very convincing to me he just felt dependent and said the pain he felt would make his heart flutter. I just could not believe it everytime he said he loved him since he knew he did when he cheated. Seperating was necessary and in the end it was the seme who took the initiative. The seme even agreed they'd call each other often and let him take his hands when they walked home. I'd be too disgusted.

The comment section here is really funny.
The guy cheated. Comments were against him
The other beat him up. Comments were against this guy.
They got a happy ending. Comments were against them having one because the other guy was forgiven "easily" even though he got beat up, got cold shoulders, reflected with inner monologues to boot, lived separate from each other, took a break, and started their relationship from almost zero.