I'm 39 and divorced 3 years ago.
For me, my saviour was my 'third place'. I have frequented a spot since I was 18 where I can basically go any evening and there will be friends I know that I can chat with any time I need it. It makes not having a partner so, so much better.
And I also missed talking about the random small things in my day that no one except my partner really cares about. I deal with it by partly suppresing it, but I've also just decided that occasionally whomever comes into my path, be that a coworker or a friend or a family member will have to deal with it :). (Making sure I don't overload specific people to much). But the coworker right next to me at work definitely gets more little details from my private life than he would if I had a partner, and he happily deals with it :).