Usher songs such as U R The One is just how it states. There is no other girl once a man fully falls in love with a woman.
He will always love her even if sometimes he might not show it. He chose her to be his one and only and if he goes off path that is only because he thinks that she isn't loving him right.
She needs to prove to him that she wants him all to himself and not make him feel like she is un happy. Usher songs will allow a woman to understand more about him if she will just listen. It is a two way path not just all him on her only. Emotions will be mutual if they both come together and allow each other to realize how much they mean to one another.
