Can relate to not feeling like you belong.
I also lost (this is long-term, not things I lost initially btw, which is a bigger list, and bypassing the obvious biggies, like "my best friend" etc etc):
- countless hours of sleep; I'm only now years later not totally dreading going to bed (still doesn't wow me)
- all those little inside jokes that nobody else would ever understand...and so mostly aren't very funny any more
- most of our "friends" who it turns weren't really friends (and therefore no great loss, actually)
- any desire to return to my (and our) favorite vacation spot
- pleasure from shopping at Lowes or similar places, which we visited often for this or that (the first time I went in without her I broke right down...luckily nobody was in that aisle and I was able to regroup pretty quickly to get the bleep out of there)
- my birthday. What I mean is I lost her very near my birthday and so I have no desire to ever celebrate it or even really acknowledge it again
There's probably more, but that's off the top