Taylor swift is in love with this guy who only thinks of her as his best friend. She likes him a lot; actually she's in love with him but he doesn't even notice one bit. She cares for him so much she wants him to be happy, so she acts like she doesn't care that he's going out with a girl he keeps talking about, "I'll bet she's beautiful, that girl he talks about.". "I fake a smile so he won't see." She's holding everything back, all her feelings for him so he would be happy. "And she's got everything that I have to live without." She wishes she could be in her shoes being with her best friend. The meaning / message of this song, loving someone is hard, when you see them happy, you have to learn to back off. You have to think of others sometimes.