Is he secretly interested and that’s why he likes doing this to me?

There’s a guy at work and I think he knows that he makes me feel awkward in a way lol. He’s very friendly and my name is Alexa and he’s said my name plenty of times and once he came in and called me Alexis and then said he used to work with someone with the name Alexis and that’s why he called me that and some people said he was messing with me especially since he already knows my name. He has teased me before.
Also he does this thing where I’ll do a favor for him at work like print something out or something ( I kind of have to because he doesn’t have access to a computer ) and after I give it to him he’ll be like
“Thank you” or “I really appreciate it” and drag it out and keep looking at me or the other day he told me “thank you Alexa” and he looked at me for a few uncomfortable seconds after and I looked away because it was weird lol and my cheeks got warm. Why does he enjoy messing with me?
Is he secretly interested and that’s why he likes doing this to me?
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