<human>: Can you condense the text into three sentences or less?

This is bad.  My infatuation with her has become so bad that it's affecting my work.  Yes, I know.  I'm too old to be like this.

Slight background, I am obviously horrible at dealing with things like this/girls.  I'm 27 and have only been with 3 girls, all 3+ year relationships.  Basically, I have no idea how to figure out if a random girl likes me or not.

Back to the subject at hand.  I've been avoiding this girl like the plague since my first day at this job.  I knew I'd fall hard for her if I ever got close to her.  She was my dream girl physically, and is an awesome girl all around.  We work in completely different departments with no interaction, but her cube is 10 feet away from mine, so I walk into her all the time.  I was successful in avoiding contact with her for the first 8 months.

But we started talking at the office St Paddy's party, and we've been going out for lunch and coffee almost every day since.

We get along well, and I know she's single/dating randomly.  I've drunkenly told her I liked her and have said things/hinted that I have a huge crush on her.  But she ignores it.  So I guess it's obvious she doesn't feel the same way?

So I tried to stop hanging out with her and talk to her less, but she comes over to my cube to hang out all the time and I can't tell her to go away without a good reason.

Then 2 weeks ago, I brought up several bands that were in town.  She said "oh, let's go!!"  And I said sure!  She canceled last minute on the first band, postponed the second one, and today, she canceled again.

So I just told her forget it and she apologized and said "sorry, I shouldn't have suggested it".   And changes the topic to other things.

It's really aggravating me now and I don't know what to do
<bot>: Crushing on coworker, don't think she likes me, don't know what to do now.  Talking to her while she ignores my crush aggravates me, and ignoring her makes me feel like an ass.