Guy's Behavior

Is he just been nice or could this lead to something?

A couple of months ago, I confided in a colleague (work in same building, different companies) about how a guy had upset me. He gave me some advice and basically told me to decide what I actually wanted from life and to work towards those goals.
He always says hi and will ask how I am but never really had a lengthy chat since then. I have since started to develop a bit of a crush on him. I'm trying to gage how he feels, I do think he likes me though. In the past few months - 80 per cent of the time he walks past my desk, he makes eye contact and I always get a good morning... When I was ill, he was one of the first people to ask how I was when I returned to work, he likes to wind me up in a friendly way and he even text me when I was away with the girls to ask how my holiday was - though he wasn't v. chatty over text. He even pecked me on the lips when we were on a night out.
I know he cares for me and he has a lot of admirers and people that respect him where we work.
We have both said we don't date at work though. However I get the feeling after this past week things may change. I will state he is a nice guy however this last 5 days he has made it clear he is single ( we were discussing how much he worked - his reply it's hard being single) weird way to let me know haha.. He told me he liked me perfume, said we needed a catch up after our deep and meaningful a few months ago... He also made sure I was ok one morning when I was half asleep and he didn't get a 'proper ' smile.. He agreed he was blessed to see me smile. I get we're friends and he wants me to be happy and not messed around by guys and maybe I'm looking too much into it but I think he may have a crush on me too... What do you guys think?
Is he just been nice or could this lead to something?
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