The thing is, she doesn't hate him. She has no real reason to.
He's just really open about his intentions. And pushy too. Her only mistake is to not outright reject him, leading the other girls to think she's leadin him on.
Though I'm not even sure it would deter him. He's so sure of himself. I too dislike that kind of guy who can't take a hint, but it's not like he tries to rape her.
Anyway, they don't end up together