I've never been in love with someone that loved me back. I thought I was in love in high school, but I forgot that everything in high school has to be put through a Dawson's Creek filter. But any chance you have to get that can't eat, can't sleep, can't breathe feeling - should not be missed. I think I've only ever really been in love once. And while it was completely one-sided, and in retrospect somewhat embarrassing, it was completely worth it. In my mind anyway, once you realize how much you can love something, or someone, it helps you recognize when you're not in love with something or someone.
And if the question is ever love, or something else...why would you choose anything else?