Kanojo ni Uwaki Sareteita Ore ga, Koakuma na Kouhai ni Natsukareteimasu - Vol. 5 Ch. 26

[Freestyle]

While I agree they were too close, the fact that is the event like main event and is what the series leading up to, is from my POV is nonesense. The dude she was closed to could be her far off cousin, or it literally could just be friend, the dude know how sometime friend can be too close at times.

I know some of my friend who break off for less but they were mostly fooling around like last day HS couple not like real have future couple. If the author have the balls to actually show her like at leash bear with me hear, get kiss or maybe the unknown guy was being too close to her and she not rejecting his advances and is not just hand holding, I'm sold.

At leash author is aware that MC not having balls to confront her is bad.

you look even more stupid now,
Reading this back after her 'explanation' there is no reason here, just trashy cheater justifications about how hand-holding and being close to another guy INFRONT OF THE BOYFRIENDS apartment isnt cheating.

She also didnt even fight to keep him so clearly the feelings were low, saying 'boring' on a date, ghosting him and then appearing like that, if you are the type of guy that can accept that then good for you, 99% of the people wont.