She regrets what she did in junior high, but he doesn't understand why she is trying so forcefully to get him back,did something happen in those two years that they were apart , to her, or was it watching other girls get boyfriends, he has a lot of harsh memories of her that are bad memories for him, her attitude is going to push him away.

ヒモにさせてくれるなら結婚するのも悪くないわね。