Our relationship was very good,from my perspective, we have always been very close. We never fought and rarely argued, she just told me that she holds all her emotions inside and hides them well.
It's OK to disagree on things (aka "Fighting"). The key is doing it in a healthy way. I thought my R was great because we never fought, or when we did, things seemed to stabilize afterwards. I learned that by not addressing issues, we allowed mutual resentment to build and it taught my ex that I wasnt able to be understanding or to actually implement any changes.
