I second what The1stWife just posted.
I was going to say "don't be like me and stay in this limbo because it can drag on for the rest of your life."
My 2nd marriage, no children, and after going through D-Day 2 on my birthday in 2014, I saw a lawyer, got a strong post-nup to separate our real properties, rather than the usual clause "in case we divorce." We executed "deeds of gift" to which he was agreeable (he didn't want to D). At least it secured me a home, but I'd retired from paid work years earlier, spent those years working on 2 home renovations and wasn't ready to draw SSI early. Those were my reasons why I "agreed" to stay legally married. My heart wasn't in continuing this M.
Fast forward almost a DECADE and he and I still live separately in my house. He pays daily living expenses, I pay the taxes and massive annual insurance. Other than his financial contributions, I've yet to see him start trying to repair the tremendous intimacy damage his 2nd foray into prostitution did to our M - and we were already hanging together only by economic threads, back then. He seems content to not lose his status as "married man" in a small community where the neighbors all got to read the local news about his arrest. I guess he feels he's been given a pass. But doing this dance keeps me stuck because...I guess it's inertia.
We can always find more reasons to tell ourselves not to jump out into the cold cruel world at this age. Yet being married to a serial cheater is cruel in itself, right? And then, even if they stop acting out, you cannot be sure when something else will trigger the behavior again. (My H was diagnosed as a SA). I cannot imagine getting that trust back. Plus we are not well-matched in many respects, so it's a grind.
But now I'm almost 73; all my younger siblings have died. Feels like time is running out to make any moves. And although there has not been another physical infidelity I've discovered, I did find him in bed with a burner phone he had lied about for 6 years after we did the Post-Nup. I had him move out of my house into a camper for the rest of the year until it got bitter cold, I took pity on him and allowed him a room and a bath in the house, OR he could go ahead and rent a house somewhere, and quit trying to pretend he wanted this M. He stayed. This is NOT how I want to live.
I will add that even after you get your ducks in a row and know you can be OK, it may not be a piece of cake to end the M or leave.
Think of how you want your life to look when you're my age.