Lsja,
I'm about 5 and 1/2 years from d-day. I've separated twice with my WH and we are currently in the process of reconciling.
The first was about 2 years after d-day.
I finally decided that I need a break from my husband. He isn't making healing the focus of our lives,
Anyway, I just can't heal at the rate we're going. I needed some space to see what life is like without him. So far its been ok. I'm not pining away for him and its nice to get through a day without getting angry when I see him. Just the sight of him can be a trigger for me.
This is exactly how I felt the first time we separated. We had just moved to the area before D-day, and I promised our son who started high school that we would stay until he graduated. My WH and I had been living separately for about 9 months when I found his affair had been going on for 1 1/2 months with emotional build-up prior. We owned two houses and I moved into one. We planned to remodel and rent it out. It was the one I would want in the divorce.
It felt great to be away from my WH. I had been working full time, and he wasn't working. I would come home wondering what "work" on himself concerning the infidelity he had been doing, and it didn't seem like enough. I would pace like a cat at night.
These were the rules we agreed upon.
WH was welcome to text, call, flirt, date, sleep with, etc. any other woman. If I found out about anything like that, I would consider the marriage over and file for divorce immediately. I asked that he tell me first, but he didn't tell me the last time.
Likewise, I would not be engaging in any way in other relationships with men. I wore a ring. I'm married until not and don't like men flirting with me.
Our high school son stayed in the home with my WH. He wanted to be in his room with his things. He could visit me anytime he wanted. It was walking distance. My husband would handle any child-care related items.
I was welcome for family dinner any night. I usually asked first. If it weren't for the dinners and game nights afterwards I probably wouldn't have seen much of my son. We had zero infidelity-related discussions during family time. We made our own plans to have those discussions. They were in neither home.
I shared my Google location with my husband and children; he shared his with them. Our children don't share their locations with us.
It was a relief to be away. I didn't trigger all the time. I thought about my future. I bought fluffy towels and nested a bit in the new house and enjoyed the quiet and read. I had the chance to see what it would basically feel like being without my WH. I didn't worry about what my WH was doing. We didn't text much, and I wasn't overly responsive unless absolutely necessary. Our possessions were a trigger for me also. That was gone. We had a storage unit for 10 years while we traveled and lived in different places. In the other house, every time I saw something from our past it either made me sad or angry. We didn't have a set time frame, because I couldn't even say. I moved back in 2-3 months I think.
The second time we separated was maybe a year or less later.
WH lied. It wasn't about a major item, but I was fed up with it all. I sublet an apartment for 3 months. I would decide what to do after that. My son then had a driver's license and new car.
The rules were similar. I didn't do dinners at the house. Instead I tried to make time independently with my son. WH came by frequently to leave little gifts. I was ok as long as he didn't knock. He did get invasive once. I had an Alexa Echo Show, and I didn't answer his calls. He contacted through Alexa on my Amazon account saying he was worried. Nooo! I used Google location to avoid him like making sure he wasn't at the gym when I went. I was much more sad and thought it was the end. Still, my life without him would be ok and calm and, well, largely like it was with him only with other people in it. I did miss spending time with him. We started to date. I invited him to have sex at times, but he went home afterwards. He changed and did work on himself. I could see he was thinking deeper. He told me later that I should have moved out sooner because it was a huge wake-up that I would live my life fine and move on without him.
That's my story. I don't think separation is for everyone. I like my time alone. My husband and I both travelled a bunch alone during our marriage. After d-day, I told him no more travelling if he wanted the marriage. He had to stay and fix what he broke and behave like a dedicated husband and father. Still, I like my time alone. I think being together all the time was not easy at all for me.