Reasons I've gone over a million times.

Boy X tells me he loves me. Boy Y shows me.
Boy X always says he'll show up. Boy Y showed up once.
Boy Y drinks. Boy X does not.
Boy Y recognizes classic song references but hates that I constantly make song references. Boy X makes them with me.
Boy X will have a strained text or AIM conversation with me once every two weeks. Boy Y and I will have long conversations about anything and everything.
Boy X makes me hate him when he falls out of cell range. Boy Y will get up with me from the other side of the world.

I need Z.