Coffee catch up with ex colleague that you always had chemistry with. Is this a date?

I spent a year working before university. Another newcomer was a graduate (2 years older than myself). We worked together for a year and had great chemistry, we have similar interests studied the same degree. We clicked on a lot of levels. Nothing of course came of it at work, though I often caught him 'checking me out' when he thought I wasn't looking.

It's been a year since leaving the company now but we have each other on Facebook. He said he has seen my photos on Facebook and it seems I am having a great time at university. We have contacted each other a few times over the year. He recently contacted me late at night asking how I am doing. We talked and I suggested we meet up for a coffee after work sometime. He suggested that we set a weekend day aside to catch up so we don't have top rush off and cut the catch up short. Is this an informal catch up coffee/lunch, or something else? I imagine what this is depends on how the coffee goes.

I of course am interested, as much as the guys at university are appealing there is something about my ex-colleague that I am far more attracted to. We are both single. Perhaps I am reading too much into nothing?!

Any insight would be useful.