I think that this song is very deep. That he was in love with this woman and all she's ever done was hurt him more and more. That he was either happy with her at first (or with another woman) and then she came back to him only to cause him more pain. He knows that she will only destroy what's left of him and to her it's simply a game (she knows exactly what she's doing and how to make him desire her more than anything), but he won't see it because he's blinded by the love that he once had for her. He is asking for forgiveness because he knows that letting her come back into his life, will only destroy him even more.
I think that this song is very deep. That he was in love with this woman and all she's ever done was hurt him more and more. That he was either happy with her at first (or with another woman) and then she came back to him only to cause him more pain. He knows that she will only destroy what's left of him and to her it's simply a game (she knows exactly what she's doing and how to make him desire her more than anything), but he won't see it because he's blinded by the love that he once had for her. He is asking for forgiveness because he knows that letting her come back into his life, will only destroy him even more.