This song seems to refer to some dark matter that happened between son and father. Although, to me, it's always been about a divorce or a simply kicking out of the house by the mother of the father. He's been "messing around" with another woman. Sleeping with someone else outside of the marriage and after being kicked out, he's asking his son to listen to his version of the things and not all of the stuff that he will hear about his "asshole" father who chose another woman other than his mother. Also, there's the line of "I love her too" repeating several times. I'm never sure if he means the other woman, in a sense that he's sorry this happened and broke the family but at the same time he can't be sorry for being in love with this other woman. Orrr he could love the boy's mother. Cheating is always a difficult situation, and love is even more complicated. But it could refer to that.