Classic changing plans by the ex wife.

It’s been my dads birthday today. She had asked me if I could have the boys on her day with them as she was going out. Fell nice that they got to see their grandad. We agreed she would drop them off at 11:00am she turns up at 11:30am. We agree that I will drop them at 4:00pm at her house. 3:25pm I get a message asking to drop at her sisters instead. I explain very simply and plain over txt “I can’t as I have plans and we agreed 4:00pm at yours”

All the excuses coming out other than the truth that she never intended to be home for then and just hoped I would divert and drop them at her sisters. Really sad as this is her one full Sunday a month with them.

It hurts to really see who she is now she’s moving on and the total disrespect and lack of regard for any plans I may have made for my dads birthday. My boys are now still with me which is nice but it’s hard seeing a woman you loved in such a bad way. I know I shouldn’t let this bother me but how do I establish boundaries but not come across as hostile. She blows any tiny boundary out the water anytime I try to establish them and just resorts to the past and why she left or that I can’t change. Am I wrong in thinking this is deflection. Helpful Advice needed to quieten my mind. Literally sat here a ball of nerves..