I am very similar. I am actually quite outgoing, and can “work the room” pretty well at any type of social engagement. The problem is, I don’t actually like too many people on more than a very superficial level. It doesn’t stem from feelings of superiority or narcissism or anything like that, I just find most people to be annoying in large doses. I have lived in Vermont for almost 5 years now, and I probably have 2 or 3 real friends that I would hang with.
This sometimes is problematic for me, as my wife is SUPER outgoing type A personality. She is probably more popular than the mayor of the town we live in, and has a zillion close friends that she hangs out with regularly. She’s always trying to “hook me up” with her friends’ husbands/boyfriends after we go on couple dates ?.
She’ll say “You should play golf with Dave some time! You guys seemed to get along great!” And my response is usually “Nah, Dave is a nice guy, but I don’t really think I want to be friends with him.” It is very frustrating for her.