I think it's just Jerry falling in love with someone he shouldn't be with. "'Promise that you won't fall for me.' What's that?" She even tells him to not get to close to her 'cause she knows it'll end badly but he does it anyways. By doing this, he says "It's just like me to let me destroy myself" because he knew what he was getting into. Near the end of the song, he still is happy that they met and shared feelings for each other, even if he's hurt this much.
I think it's just Jerry falling in love with someone he shouldn't be with. "'Promise that you won't fall for me.' What's that?" She even tells him to not get to close to her 'cause she knows it'll end badly but he does it anyways. By doing this, he says "It's just like me to let me destroy myself" because he knew what he was getting into. Near the end of the song, he still is happy that they met and shared feelings for each other, even if he's hurt this much.