Is he treating me this way on purpose or really trying to show disinterest?

Anonymous
I thought there was a guy I work with who kinda flirts and I feel in my gut he could be interested. He’s teased me before and gotten really flustered while talking to me and blushed. Our conversations always feel a little awkward and I feel a sexual vibe. He’s told me i smelled good once and he’ll ask me my plans for a certain day.
He’s a little older than me. He knows my name and says it a lot and never has had any issues saying it.
we had this other instance where he called me my other coworkers name but I was looking down so he didn’t see my face and he said he was about to say I looked great. Then later that day he teased me and called me the other coworkers name to tease me/get under my skin.
Today he came in and said “hey Alexis” ( my name is Alexa lol and he’s said it plenty of times” I looked at him and jokingly said “did you just call me Alexis?” And he came to my desk and was like “oh yeah. It’s because I used to work with this girl named Alexis”. He was serious when he said it.
Lol I don’t understand how he mispronounced my name because he’s said it before.
Was he joking / teasing or rlly forgot my name?
Is he treating me this way on purpose or really trying to show disinterest?
2 Opinion