Break Up & Divorce

Is it normal to go on a "family trip" with my ex fiance and our 2 kids?

Background information: My ex fiance (30M) and I (29F) broke up and ended our relationship and engagement 2 years ago after dating for 4 years. We currently live separately but still coparent 2 young children together and see each other on a weekly basis. He has the kids on weekends, I have the kids during the week. He was the one that ended our relationship and while I did beg for him to stay, it just did not work out and he didn't feel the same way anymore. I eventually moved on and now we have a civil and decent coparenting relationship. He has made it very clear that he has "moved on" from me a long time ago and has no romantic interest in me.

Last year, I brought up really wanting to take our kids on a trip or vacation somewhere and asked if he wanted to join and he declined and was fully against us taking a "family trip". He told me it would be inappropriate and weird for us to go together as a family. He was not open to the idea at all. Fast forward to today... I told him my dad and I wanted to take our kids on a trip and he did not support it... but then suggested he would be willing to go instead. Now he is fully on board with taking a family trip in a couple months to Disney World... We will also be staying in the same hotel room.

What has changed? Why is he suddenly so okay with it now? Is this normal for coparents?
Is it normal to go on a "family trip" with my ex fiance and our 2 kids?
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