Am I being friend zoned?

There’s a coworker that I like and we’ve gotten close… He was always on my case on the shoes I wear, me not saying goodbye to him, always looking at me when he talks in a group and spotting me. He’s the only one who has something to say about me and when we text it’s mostly work or us having a joke battle and not leaving each other on read (we always like the last message). However, in a convo, he once has called me bro and he always playfully punches my arm when Im around. I do prefer becoming friends with a crush before I can see that it goes somewhere further, but im not sure if I should act on it

Am I being friend zoned?
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