On “Somebody’s Problem,” Morgan Wallen talks about meeting a girl at a party. He concludes that a girl as attractive as her must be alone at this party (and not with a significant other) because someone else thought of her as a problem and probably regrets breaking up with her. He is saying that he would treat her much better than anyone who was foolish enough find any issue with a girl this attractive, and whatever flaw someone else found in her would not be a problem for him at all.