I don't think this is a song about ending anything. I think it's about a girl doing something terrible to him and she's mad that he's disappointed in her for it. (A common reaction when girls make mistakes) He knows that she'll always do that to him and it's always gonna be painful for him.
But the girl means to much to him so he's surrendering to the idea that he'll always be in pain when he's with her. To him it's worth it though, because she means more to him than escaping his pain. He accepts her and the pain she comes with because she can't care enough about how she's hurting him
I don't think this is a song about ending anything. I think it's about a girl doing something terrible to him and she's mad that he's disappointed in her for it. (A common reaction when girls make mistakes) He knows that she'll always do that to him and it's always gonna be painful for him. But the girl means to much to him so he's surrendering to the idea that he'll always be in pain when he's with her. To him it's worth it though, because she means more to him than escaping his pain. He accepts her and the pain she comes with because she can't care enough about how she's hurting him