I wondered something similar. Just a few weeks after BD, I just could not function with H in the same house so I asked him to leave. Sometimes I regretted it because this freed him up to date OW - he ran right to her, and never moved back. But, I remember how awful it was for me to try and pretend I wasn't dying inside. I had to have him AWAY from here so that I could survive. Well. Hm. We've come a long way, baby!! You can do this Mighty.
Me 53, XH 57 M 20 (+1.5) years, no kids BD June '13 H moved out July '13 Confirmed long-suspected PA Feb '14 H filed for D Nov. '14 D March '15