Wally: The thing about being in love is that you can't force anyone. It's natural to want someone you love to do what you want, or what you think would be good for them, but you have to let everything happen to them. You can't interfere with people you love any more than you're supposed to interfere with people you don't even know. And that's hard, because you often like interfering--- you want to be the one who makes the plans.
Angel: It's hard to protect someone else, and not be able to.
Wally: You can't protect people, all you can do is love them.