I agree with Notz that you don't really get over it & you need to make yourself your best friend.
That is difficult to do.
As I get older, in my late 40's, I've realized that most people I meet already have these connections solidified & make it a bit more difficult to be welcomed into their groups. It's like HS again!
And HS nearly killed me. Try something new or different. You just never know I guess. But try!