I am so sorry you are here, and for everything you are going through. We all know what you experience with the re-writing of history and the alien behavior. It sounds like you are doing exactly what you should be doing at this point, with remarkable self-control and poise.
You'll get lots of great advice here - just keep posting.
It sounds like your H is struggling. As you obviously know, you can't live this struggle for him, just continue to be the lighthouse.
Best wishes!
M 16 yrs, WH62, P54 3 adult blended kids EA 11/13, BD1 6/14 PA fall 14, BD2 2/15 Piecing 2015, BD3 12/15 Separated 4/16 WH moved OW in 5/16 Divorced 6/15/17