Good questions folks. I was expecting more of an ear bashing.
It wasn't great living together. We slept in seperate rooms and tried ot live seperate lives as much as possible. We still ended up doing a lot as a family though as we only has the one family car, so weekends were tough. It was actually better for the dc when i moved out as it was clearer for them.
i think once the family home was sold it was like a fresh start for them. They had two new homes to get excited about. Exh only lives 10 min walk away so its been quite easy to navigate.
We have always both rung the dc on the days they were with the other parent and for the first 2 years they didn't go more than 3 days in a row without seeing one of us.
Any regrets? Yes - i wish my exh and i had separated / divorced earlier. we were both scared of the unknown and coping without the other, we both felt trapped. if we had split earlier then i wouldn't be tarred with the OW / bad guy brush. I also carry a lot of guilt now my exh is unwell.
How did i know? sounds cliche but we just knew. It was more a feeling of being completly comfortable, effortless and at ease with DH. With exh it always felt like we had to work at our relationship / compromise etc, but with now dh its just so natural. With exh there was always a bit of a mis-fit, a feeling of being on a different page. i was young when i got with exh and it was lust / excitement driven, rather than friendship / companionship driven.