Is there a word for that?
He didn't want to take a selfie. He wanted a _.
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In film theory, such framing is called a two-shot. I believe the same term is used in photography. I don't know of a less formal term.
Urban dictionary suggests "usie"/"ussie" or "groupie". "Friendsie" seems like it would fit, but these all sound stupid to me. You could probably just make something up.