The Host - Stephenie Meyer

This love was tricky; it had no hard-and-fast rules—it might be given for free, as with Jamie, or earned through time and hard work, as with Ian, or completely and heartbreakingly unattainable, as with Jared.

— You don't really feel that way about me you know. It's this body... she's pretty isn't she?
— She is. Melanie is a very pretty girl. Even beautiful. But pretty as she is, she is a stranger to me. She's not the one care about.
— It's this body.
— That's not true at all. It's not the face, but the expressions on it. It's not the voice, but what they say. It's not how you look like in that body, it's what you do with it. You are beautiful.