Are we not interesting enough?

Why does it seem like our extrovert friends always have other people around when we want to spend time with them? Sure, sometimes it’s because they always have other people around, period. But other times they invite others even though they know in advance that they’ll be getting together with us! Do they need others as a buffer or because we are too boring to spend time with one on one? Do they need to invite lots of entertaining people along just so they can get through that hour or two? Is...