When I was going through the darkest part of my marriage dying, I really did not want the divorce.
(As a side note, I am so grateful today that I was freed by that divorce. God has used Mrs. DM and Munchkin to restore the laughter in the halls of my heart.)
A temptation I had was to take even the smallest civility from my estranged wife (at the time) as a sign she was willing to stop the divorce. She wasn’t. It was just a way to jerk me around.
My encouragement to those in that place is to look at your cheater’s actions or lack thereof.
Focus on what have they done or not done to address the cheating in a rigorous way.
If they have done nothing (or very little), then I suggest reminding yourself that the cheater is choosing the path of destruction and you need to seek freedom from that spiritual death march (See Hebrews 10:26-27).
This will help save you suffering. It is hard, but sometimes the kindest truth is a hard truth.