Co-worker relationship confusion
I had been working at this new job for only about 2 weeks, when the holiday party came up. A fellow co-worker I had been eyeing was there and we got to talking and I realized how much chemistry we had together (as did he). We started flirting a little more and more at work, then he asked me to hang out. I wasn't free to hang out, so I said I would take a rain check... then a few weeks later I took him up on the raincheck, but then HE said he wasn't free but said when he was free we would "definitely" hang out. It's been a few months and he hasn't asked me to hang out again, but he has been continuously flirting with me through email and at work. The ball is in his court. I just don't understand why he would ask an almost complete stranger with whom he works in close quarters with, to hang out, then not follow up on it?