Just to elaborate on the flexibility. So yesterday H didnt have the boys, he could have been a bit more organised in letting me know, but he was unwell (or so he says) so he asked to collect the boys from school today,as he hasnt seen them since Friday morning and i say ok to that, although today was my evening and H was meant to collect tomorrow.

Yes it does mean we communicate, but our interactions are business like, and if truly this didnt work for me work wise this week i would tell him.