Hi Irish,
My H has an OW but he appears to spend considerable time alone. It has appeared from Day 1 as if ow was more a friend with benefits than a life long partner. In later months her role appears to have diminished further. H appears to spend more and more time alone. It's as if they need this time to reflect and absorb their actions. H has become increasingly introverted and only recently is he making deeper connections with his family. It's as if this solitary time is part of the required 'therapy.'