Oompa, I know I'm out of line to say this because I'm not yet middle aged and started over at 24 (but you know what they say: 40 is the new 30, hehehe, it's all in the attitude, baby): STOP TRYING TO FIT IN AND JUST BE YOURSELF.
There, I said it, I feel better. I hope you do too, eventually, if not tonight.
A quote I heard recently was something like: If you are basically a nice person, nice people will like you. The rest: WHO CARES.
Another one: What is the point of being accepted for someone you are not?
Those thoughts get me through the tough times. Just be your wife's friend. I know it's hard to relate to JW's, so hard, what would you do if a friend was over? Get her a beer, play some cards... Good luck!
Rachel