Well, we all love updates on MN, so here's the latest on this scenario:
Went out for a few drinks on Friday night with work. Turned into a big night out. Crush was around me, a lot and as much as I fancy him, obviously am aware he has a girlfriend so he's off the radar.
Crush then decides to tell me how much he's liked me since he started (about a year, I think)
and if he didn't have a girlfriend, he would have asked me out a long time ago. He was being quite flirty and I did my best to steer the topic of conversation to something else and I also tried my best to lose him a bit, or rope other colleagues into a conversation with him.
We all went to a club and he eventually left as his mate (who lives near him) was too drunk. Next thing I know, crush is back in the club, comes over to me and kisses me
. I push him off, reminding him that he has gf etc. 
He then kisses me again and I push him off again. I was polite but firm. He went home.
So, I still have crush, crush has kind of crush on me but nothing can happen.
I suppose it's nice to know he feels the same way, but frustrating nonetheless.
Who wants to go out with a work colleague anyway? 
Not a hugely exciting update, but it's been a bit awkward at work since.
Thought I'd let you all know anyway!