sorry wrong place
issok lol
is it this one or I don't know https://www.mangago.zone/read-manga/boundary_parks/
it's been a long time since I dropped this manhwa so I've forgotten all of the plots but as far back as I can remember the story regarding cheating and the seme hair is blue
Damn it was so fucking toxic I cried so bad for the first time while reading a manga
Yes it is thank you soo much
It was a webtoon with blue hair seme and the uke cheats on the seme with a dude he met long ago when he was in high school
(Now they’re working adults) they even had a teacher n student role play during sex once