This seems to be about a very volatile, and possibly abusive, relationship. Basically he's a bit of a sociopath in saying that he's been this fantastic boyfriend and "giving" her everything. He blames everything on her and every time they argue (about whatever, it's always over nothing), he turns the tables back on her, so she always loses. Since she can't match his supposed contribution to the relationship, she is abused, whether verbally, emotionally, or physically, so she decides to leave on her own. And in the next relationship she gets into a bad relationship, she'll be braver and get out before things get to that point, instead of asking the guy break up with her.
This seems to be about a very volatile, and possibly abusive, relationship. Basically he's a bit of a sociopath in saying that he's been this fantastic boyfriend and "giving" her everything. He blames everything on her and every time they argue (about whatever, it's always over nothing), he turns the tables back on her, so she always loses. Since she can't match his supposed contribution to the relationship, she is abused, whether verbally, emotionally, or physically, so she decides to leave on her own. And in the next relationship she gets into a bad relationship, she'll be braver and get out before things get to that point, instead of asking the guy break up with her.