Confused and Tired When I Think About Relationships

Ever try for something so hard and for so long that it seems that you've been doing it forever? Ever feel like no matter how hard you try, every time one thing gets resolved, another problem pops up and you feel like there seems to be a never ending cycle of ups and downs? That's me right now.

I've been trying to be with this guy for months. He and I work together and he's Absolutely Gorgeous (at least I think so). We've worked together for a while and before this thing had started had only talked in passing every once in a while. And, I'd been in relationships and he the same, so I never really did anything about being attracted to him until about March of this year. I wrote him a note (I know, how juvenile) and told him I liked him and I was interested and later on he called me and told me he was willing to hang out and see what happens.

Unfortunately, we didn't get to hang out until about June. Went out on two dates and claims to like me. But every time we're to go out, he cancels or doesnt call. And then he never explains or calls and apologizes and I feel like I'm sick of trying and asking anymore.