Is it possible that he is shy?

I work with a guy that i have a crush on, around two years ago for the first time i asked him for a coffee, we have met 2,3 times since then but nothing has ever happened we just cuddled once. We don't text often but a few weeks ago we did text for a few days and the conversations got spicy and teasing (we couldn't go out cuz we both were on vacation) after that i texted him but he said that he has plans which was okay for me. A week after i texted again asking him why all the teasing and stuff if he doesn't do nothing. He daid that he didn't know that i wanted to go out or have sex with me and he tought that it would be inappropriate but yet when the converdation got teasing he even tried asking for nudes. We do work at the dame place but we don't see eachother often probably maybe once every other week. He is 33 years old. I need guys thoughts on this what is going on how do i even interpret this?

Is it possible that he is shy?
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