to feel bloody chuffed with myself that my ex and I

[Ladyanonymous]

managed to both be at my DD's birthday party at my house and be civil to each other and have a laugh after this happened last week

YANBU, YABVVReasonable.

Being able to have a civilised relationship with your ex is one of the best gifts you can give your dcs. That, and being consistent in your parenting decisions. However, there is a time when the dc's hate it 'cos they can't play one off against the other