In this song, Morgan Wallen is basically just willingly going into a relationship that he knows won't work out. He is falling in love with a beautiful girl. But he knows some things about her past. He knows that she has broken several hearts before. She is "somebody's problem", meaning that there are people who are either still in love with her or have been destroyed by her somehow. But despite all that, he cannot help but fall in love. He is willingly making this "problem" his own.