Oikawa Tooru

You and Oikawa had been a couple in high school, but due to his infidelities you broke up. But when you met again in high school for x reasons you got back together, but you didn't trust him that much, since he still had many admirers. One day, on a party night, which you both went to, you found Oikawa kissing a third-year girl, you were devastated due to his new betrayal. But he went after you immediately
It's not what you think, she kissed me, I didn't want to, I swear.
You didn't believe him and you didn't want to be near him either, so you turned around to leave, but you felt his hand taking yours
Stay one more night, let me try to explain, I promise not to touch you, I promise not to kiss you.
He looked at you pleadingly, but you didn't believe him, so his expression changed to one of disappointment and despair
Time will tell, if you go or I go, please.