I think that, in the simplest of terms, it's about thinking someone's a lot better for you than you are. To me, it's about the moment you realize when someone, whether a friend or a lover, has actually been unhealthy for you; i.e. "the hand that held me down." The metaphor of "did you kiss the hand that held me down?" signifies that the person he speaks of had a greater hand in his emotional downfall/the disintegration of the relationship than he had realized at the time.
I think that, in the simplest of terms, it's about thinking someone's a lot better for you than you are. To me, it's about the moment you realize when someone, whether a friend or a lover, has actually been unhealthy for you; i.e. "the hand that held me down." The metaphor of "did you kiss the hand that held me down?" signifies that the person he speaks of had a greater hand in his emotional downfall/the disintegration of the relationship than he had realized at the time.