What I would tell him if I wasn't a wimp:
"I never stopped loving you. I don't know what's wrong with me, but I just can't seem to do it. Everything about you is still perfect, even though you were the one to break my heart when you weren't even mine. All I ever do at school is hope that you'll talk to me, or at least make eye contact. You have the most beautiful eyes. Have you forgotten about me? It's been a really long time, which just makes me feel worse about how I feel. I think my friends think it's weird that I don't hate you, that I ever liked you in the first place. I don't think they know about all this. When they talk about you, it's never good. It hurts me, for some reason; probably because I'm stupid. Rumours have been going around saying that you got a girlfriend. I don't know if it's true, but I hope it's not. I also hope you're not gay because that would not make me feel very good. You don't know how much it hurts me to see you talk and act like you do around my friend, and to see you barely notice that I'm even there. I don't know anything anymore because of you. You broke me. But my heart doesn't seem to care. Please, just don't forget me."
Unfortunately, I'm a wimp.