Hi I'm in my early twenties and so is the guy I have a crush on. We met a few months ago at a chess club and he asked for my number the first time we met so he could teach me chess (I was a beginner back then). A week or so later he asked if he could over to my place to play. We chat fairly often, about once a week, and we've been meeting up nearly once a month outside of chess club since we're both quite busy as I'm at university and he has a job. At chess he usually comes over to me and he sometimes offers me a lift home at the end of the night. On the other hand he sometimes doesn't answer facebook messages for days/weeks and he's stood me up twice although he apologised for both.
I'm just wondering whether the above counts as normal friendly behaviour from a guy (he does seem to be friendly and outgoing) or whether there is a possibility of dating. If it's the latter what kind of flirting do men respond to? I'm a tomboy so the whole 'be girly and cute' thing isn't really going to work. Thanks in advance.