I split up with the father of my children following a long period of being intensely unhappy. He was (for most of the relationship) unsupportive, hypercritical and unsociable... and financially I'd felt I was always sacrificing to subsidise his lifestyle. Since fully separating, he's always telling me that it was circumstances that caused it and he's aware of how things weren't right. He's more helpful and complementary now than he ever was before. We'd agreed to keep doing some things as coparents together because it seemed beneficial for the children. Whereas days out together when a couple were full of moaning, he now makes a real effort. He wants to make a go of things again. I'm stuck. On the one hand, he's now behaving in the way I'd requested for about a decade. He's their dad, we have history and there are times the children want us back together. On the flip side, he didn't listen until it was truly over. I don’t want to confuse our children with something that's on/off. I know statistically speaking, it's safer for them to grow up with both biological parents if its a happy home. I'm interested to know from anyone who has been in a similar situation, as the parent or grown up with parents who split then got back together, would you give it a go or avoid at all costs?