I actually went to the concert with some friends. All couples. My social life is decently busy, though it will never be what my W's is. She revolves through a large group a friends. Theres something to the 'newness' of connections with her. After a couple months, she will move that friend out of her close circle and insert another one. I was the only person in her life that wasnt rotated out, until now. I agree with you on the social aspect and differences between us. I am comfortable with a small group of close friends and she likes a large group of friends, though not all are close to her.
I have been decently busy socially, but how would she know? she has no idea I was at that concert or doesnt know any of the other social activies I am at. I am much more active with my friends than I used to be, but I do agree with you. Just dont know how she would recognize it if when I'm really social, I'm without my kids.