Like lots of threads the similar story of drifting apart and becoming housemates going through the motions, not spending time together.
Your OH has been unhappy for a long time although no specific reasons given and so you decide it’s best one of you moves out. What would you do or think if when it came to it your OH changed their mind? Struggling with how it could get to this stage and then all return to normal like it never happened has anyone been through this?