Unfortunately, nothing can fill that void that the WAS spouse creates. So what to do? Focus on what we can control, which you seem to be doing.
I hope your work BF meetup goes well, that positive energy should carry through to other aspects of life, and I hope it does.
Even if he comes back, your feelings don't just bounce back to where they were before. That's the sad part, all the BS you go through changes you, your feelings, and your perception. It truly kills the old MR. We just take forever to realize it.
H 34 W 29 BD 3/12/18 Divorce Busted Spring 19
It is not things that bother us, but the stories we tell ourselves about things.