Fucking asshole... If you're admiting your defeat at least do it without a fight, it's like "i'm surrendering, but i will burn this place down so they can't use it as a base". Bitch, everytime you move you made the situation to be more complicated, be his friend and talk to him like usual and be mindful when he's with his gf, you don't have to antagonizing him like that, that's all... I mean seriously, you're a pain in the ass...
And yes, the mc is as dense as kowloon walled city. But the one who overcomplicated the situation was her, she doesn't know her own place, even for a childhood friend her action is way pass the limit, made worse by her idiocy who knew exactly how dense her friend is, yet still make a move on him.