Firstly hi!
Now here's my problem - there's this guy at work, we've known each other for about a year and a half but never really said more than 'hi' because at the time I was in a 2 year relationship and my boyfriend didn't like me talking to this other guy.
He probably saw him as a threat because my boyfriend knew I fancied him and he liked me, however I was in a committed relationship and never thought of this other guy as anything more than a work friend . He made such a big fuss about me even saying hello this this other guy that I stopped talking to him to please my boyfriend.

Anyway me and my boyfriend split up for good a few months ago and I realised that I didn't have to avoid this other guy anymore and we started chatting again as friends.
I went out with my friends last Saturday and he was in the same bar, we talked for ages and ended up kissing. He admitted he'd liked me for a long time but would never have approached me because he knew I had a boyfriend before but was thrilled to be with me now.
Things went really great and we went out Wednesday for drinks, more kissing and hand holding and stuff, he made loads of "future plans" like going with him to get his new tattoo and seeing him when he plays his next show.
We went on both our breaks together at work yesterday and got on great, it seemed really easy because we've know each other for a while.

Whilst we were on our break yesterday he asked me if I was going out tonight I said yes and he was like "definatley see you there, i'll text you when I get into town". So I went out with my friends, it was getting really late and he hadn't text me so I sent him a casual text asking when he was going to be in town because it was a bit dead for sat night and we were thinking of going home earlier than normal. He never text back and he never turned up in the bar I usually see him in. I don't know whether to be concerned? We seemed to be getting on amazing so I don't know why he wouldn't turn up or at least text me to let me know? Opinions?

Maybe his messager is broken, does he have your number? Ask him, what have you got to lose? Goodluck