Express Till Guy

Express Till Guy is a guy at work who is on the express tills, usually when I'm buying some sugary snack for breaks. He's very sweet and chatty, and is probably the closest thing I have to a crush right now.
I think it might be an issue for our relationship together that I don't so much fancy him as want to look after him, because he's cute. I have already promised to buy him cake. Where is this going?