Bl where they are childhood friends. They get together in the middle of the story but then uke cheats (he has an affair a few times with a guy because he is hot). They weren't in a fight or anything. I don't remember how it ends but the other guy (the one the uke cheats on seme with) ends up having a side story.
I read this a while ago and it wasn't completed at the time so I'm not sure how it ends. I just remember the main couple being so lovey dovey in the beginning and the seme being a very cute /sweet bf. I think they lived together but I'm not sure about this part