Guy behavior: sitting next to me except when this guy's around?

lanternhill
I have a question about my crush. When he, his brother, and our guy friend (who's a bit older and more experienced) hang out, he always ends up sitting across from me while the guy sits beside me (often before my crush has a chance to sit down, not always). Any other time he usually sits beside me. I don't get it - he's usually kind of jealous of guys who flirt with me or sit near me but in this case...

In any case he sits near me and messes with my stuff (glasses, keys, sips my coffee, etc.) and hovers close sometimes when we're walking around. I just don't get the seating arrangement thing. The only things I can think of is he feels intimidated and/or wants to see both our faces (he's friends with the older guy). Thoughts?

I should add that the older guy doesn't do any touchy feely stuff or anything and has joked about me dating my crush sooo I don't know maybe my crush just sees him as an older brother so respects him and lets him sit wherever.
Updates
+1 y
Anyone? It's a pattern I've noticed and it's really interesting.
Guy behavior: sitting next to me except when this guy's around?
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