Exciting! BUT what next?

I've been seeing this Gemini guy for the past 2 months and am finding him a little tricky to read at times. I'm a Libra by the way.
In a nutshell — we met at work, hit it off and are —casually?? seeing each other, but we only see one another when he's in Leeds (he lives in Bristol).
This guy has an amazing sense of humour and his wit is sharp and sometimes cutting. I thrive off this and this is how we initially connected.
The —L?? word has been mentioned (by him) for the past 3 weeks, in both messages and on drunken phone calls, where he is always talking about —our relationship?? and how it would and wouldn't work (but it's always said in jest!)
I know Gem guys hide their true feeling with humour and sarcasm and this is very evident in him, plus he seems a little insecure and has low self-esteem, but when that guard is down, especially after some Dutch courage, that's when his sober thoughts are let loose.
What draws me to this guy is a multitude of attributes, but I think the mystery and the freshness of the relationship keeps the intrigue going, plus he's extremely tall,dark and good looking. Communication is very constant and has been since day one, so it's obvious we're both into each other.
He also likes to test me in saying things along the lines of: —I'm being chatted up by someone?? or —I've told a few work mates about us??. Is he trying to gage a reaction from me?
Basically, I'm having a lot of fun with him, even though I don't see him much, but would like to see him more outside of the work environment. He says he's not sure what he actually wants at the moment. That's fine as I'm not too sure either, but I do know is that I'd like to see how things could progress. We both have a habit of playing games to keep things fresh, but should I take the bull by the horns and move things on a little?
All your thoughts are welcome.