People who have been close friends, maybe four of them over seventy odd years. People I've treated as close friends and for whom I'd make a sacrifice or two? Well, that is easier to do, so maybe a few more, but I cannot say I remember any of them.

As for meeting friends from long ago? I met someone I had not see for about forty years. He was younger, so I had not paid him much attention at that time, though we had hung out in the same circle of 'acquaintances'. I found it fascinating meeting him for a number of reasons.

First of all, whatver I had liked was still there....
Secondly, it was fascinating to listen as he reminisced about things I had said or done and even where I could not recall the instances, I was aware of how alien his impressions of me were - which sort of made me 'fascinating' as I tried to see myself as he saw me (I failed, of course).

I am a loner - but I love meeting people now and then, for I find them endlessly fascinating (as long as they allow me my space).