About that retirement home - don't buy anything now unless you have money to burn.
IF you end up divorced, having more debt on another property could be a bad financial move - so just don't so anything that would put you in a bad spot if you did divorce (not saying you will, but...). Also, I'd be worried about the financial fallout if this OW gets him fired too like he did others.
I went along with buying a stupid piece of property in Mexico when I was trying to be cooperative with my MLC spouse and all it got me was less money in the divorce.
Sounds like you are doing plenty right with your GAL activities, keep it up. You don't have control over whether your H ever snaps out of it or not, so LIVE YOUR LIFE. That way, if he does come back, you'll be more interesting, and if he doesn't, you have a running start on making your future life fabulous.
