Male behavior ( opinions)?

A little bit of context regarding this title question. I work with this guy (let’s call him X) who is very professional, mature, respectful, silly, intelligent, and young. He is a few years older than me however I catch him staring at me quite frequently, and if I’m speaking to someone else, he’ll kind of stare. For example, I had another coworker (male) that came by to say hello and I introduced to my female coworkers and X was nearby, he wasn’t with us and I kept noticing him staring at us. I’m not sure if he wanted me to introduce him or what. But I also noticed a lot that in many situations when I’m talking to someone else, and he happens to be in the middle or around, not discussing directly with him per se, but just in the middle of my conversation with someone else, he takes my side a lot for everything and he tends to answer for me. For example, I have a friend who is trying to get me to adopt a puppy and he flat out said no, she’s not adopting a dog. Another example there there was a conversation between my coworkers, including him and I where my coworkers asked him the question which involved taking us with him to other work locations and he answered he would take me with him and I would get the first before him. I’m not sure if he’s just like that to tease me or not; it doesn’t bother me or anything. I just find it quite curious and I don’t know what to make out of it if there’s anything to be made out.

Sorry it’s so long.
Male behavior ( opinions)?
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