<human>: Can you provide a brief overview of the text?

There's this guy I'm cool with at my job. We barely see each other (like 2-4 days a week for a few minutes) since we work in different departments. I see him mostly in the break/lunch room and sometimes in the art galleries (since we work in art museum). 

We've gone out for drinks before with some of our coworkers. I told him I could go a certain day before he planned it which I thought was nice. One time I bumped into him and another coworker (also a man) after the museum was closed and my coworker said to my crush "You didn't tell me (my name) was going out for drinks." and my crush said "Well that's too bad." Then after that he waited for me to clock out so him and I could walk to the train together to go home which he has never done before. 

The only thing is that one time he used the word 'man' to me when he wasn't feeling well. So do these signs mean he's being friendly or is there more to it?
<bot>: My coworker is spending a bit more time with me in and out of work and talking to me more but I'm not sure if he's just being friendly or if there's more to it.