<human>: I have been attracted to my male, slightly-younger coworker for quite awhile now. We have been working in the same office for just over a year. We work for the same company, but not the same department. 

The two of us go out alone almost every Friday, and spend hours together just chatting at the pub. We also take many breaks for lunch/coffee during the week and text in the evenings one or two nights a week. He is not particularly complimentary of my appearance or anything, but on a few instances, we have had pretty deep talks (about family, the future, etc.) and there has been some leg/foot touching. 

But it has never really gone anywhere beyond this. I know that he had a girlfriend for about 8 months last year, but I only heard about this through other coworkers and he never referenced her directly to me. He almost-always initiates contact.

I've become a bit infatuated with him (we have a lot in common), but I'm too worried about rejection and embarassment to actually say anything. Should I? Does it sound as if he is romantically interested in me, or should I assume that I have been friend-zoned?

Can you condense the text into three sentences or less?
<bot>: Mandatory summary/question! My coworker gives off mixed messages. How can I tell if I should ask for more?