What do you think of the situation?

Me and this guy at work … he’s jokey and friendly and flirts (compliments my appearances and acts jealous). So today he saw me at lunch and said something to me about work and I could tell he was trying to be purposefully fake awkward and like fakely aggressive with me. He kept saying the same thing over and over. I feel like he was trying to let off steam by using me haha. But in a playful way.
What does it mean if a guy lets off steam this way?

What do you think of the situation?
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