The song is about being in a bad relationship but still being in love with the person you know is bad for you. He's admitting it was his hand (his own fault) that kept him down, but she was encouraging it. And still he's the one that defends her if anyone beings up how bad she was for him.
ok... no...
The song is about being in a bad relationship but still being in love with the person you know is bad for you. He's admitting it was his hand (his own fault) that kept him down, but she was encouraging it. And still he's the one that defends her if anyone beings up how bad she was for him.