My ex drives an hour and a half most Sundays to cook me lunch and see the children (both of whom are older than 22)

This, despite his assurances that if I went ahead with the divorce I and the girls would never see him again!

We now get on much better than we did for the last 20 years of our marriage and I still care about what happens to him although I wouldn't want to "get back together" as a couple.

It is possible to remain on good terms - I think mainly in our case because we avoided the mud-slinging and viciousness that can happen when things break down. We still maintained a respect for each other even through the difficult times when we were divorced but still living in the same house (not recommended).

Guess I'm one of the lucky ones.