In this song if you know what the phrase fools gold means and listen to the lyrics I feel like it's about being used to benefit someone else but he knows he is beings used but she doesn't know he knows-sorry I just quoted friends. But he knows he's being used but throughout this so called relationship he keeps falling more and more in love with her and when she gets what she wanted and leaves. He can't get over her even though it wasn't a real relationship he developed real feelings for someone and he isn't ready to let go of her but she doesn't feel the same.