Ds10 will be starting secondary school next year, so obviously we're in the season of open days/evenings.
I have asked exdp to accompany us on this as I feel it should be a decision we all make together, he was keen at first when I suggested we meet up to make a shortlist and what we both felt was right for our ds and to visit those schools accordingly.
That was 3 weeks ago, since asking I have heard nothing from him regarding this despite me asking if he was still planning on coming he has completely ignored me.
We had our first session this morning and I've just had a message from him going absolutely mad at me because he wasn't there.
I explained that I did inform him that we was going and as I hadn't seen nor heard from him I assumed he wasnt coming, to which his response was that he has another dc at home and his partner is upset that he will be out of the house a couple of evenings/early mornings per week and she doesn't think he needs to go as they live with me.
This has really angered me as I think that regardless of him having another child he has a responsibility to ds and his future prospects, so I've basically told him to piss off and I will do it alone.
It's actually left a very bitter taste in my mouth and I feel like I want to start ww3!
For context I am not that ex that calls and texts with constant demands, we used to have a very amicable co-parenting relationship until the start of his relationship and would often be able to speak about our ds.
So Aibu for expecting him to be there to make this decision with me or am I overstepping? Either way this is not going to go well as i am seething, as ds was really upset he wasn't there.