
The MC is at fault too. He is too indecisive and it makes it seem like the guy still has a chance, the fact he doesn't say a clear no boosts that dude's confidence. He needs to be more firm about what he tells him. For example how MC let him touch him at the parking lot, right there he should've said a clear 'no'. He didn't do it. The guy thought: "Oh, well. It'll take some time." He has an awfully good confidence and the MC never told him anything like he is seeing someone et cetera.

I was so pissed off when the MC just let that guy touch him. (╯°Д °)╯╧╧ Like you have Bexan in the house, he is waiting for you to come back and you are over here letting your ex touch you. (╬ ̄皿 ̄)凸 I REALLY WHAT TO SLAP THE MC AND TELL WHAT HE SHOULD DO AND NOT DO!! Man I wish I could just go and jump into the manga and be part of it.(๑•ㅂ•)و✧
Mr.Ex, get the message! HE'S OVER YOU.
"I see, it will take time for you to forgive me".
NO, he's not interested in you anymore, beat it( ̄へ ̄)
Bexan, why did you run away like a little wimp, get back there and listen to mc.