I think meeting a whole new different group of people who are not aware of your sitch at all will help. That's what I did when I joined the hiking club. Everyone thought I was single, so it was all about hiking. It was my escape. When I thought things were heading so well with my H, I told them my story, thinking my H might join us on a hike soon. Big mistake. They are still my friends, but things are not the same anymore.
Good luck findind a good meetup group. I belong to about 30 groups, and intend to attend more of their meetups now that work is slowing down a bit.
