This is something that I just went through. I fell in love with someone recently and felt the burn of his rejection. I was dumbfounded because he wasn't even my "type." He didn't work out, was short, overweight, and had no body hair! He was completely not my type, but I still fell in love with him. It just proves that love is more than skin deep. Well, in the end, he just wanted to "be friends," which was too much for me, so I had to end it because it was too painful to be around someone you adore and have them view you as a mere friend.
Neil Gaiman says it in a better way than I can, so I let him express why being a mere friend sucks:
“Have you ever been in love? Horrible isn't it? It makes you so vulnerable. It opens your chest and it opens up your heart and it means that someone can get inside you and mess you up. You build up all these defenses, you buil...d up a whole suit of armor, so that nothing can hurt you, then one stupid person, no different from any other stupid person, wanders into your stupid life...You give them a piece of you. They didn't ask for it. They did something dumb one day, like kiss you or smile at you, and then your life isn't your own anymore. Love takes hostages. It gets inside you. It eats you out and leaves you crying in the darkness, so simple a phrase like 'maybe we should be just friends' turns into a glass splinter working its way into your heart. It hurts. Not just in the imagination. Not just in the mind. It's a soul-hurt, a real gets-inside-you-and-rips-you-apart pain. I hate love.”