This is maybe an AIBU but I can't face the flack!
Ex-H and I share custody of DS (50/50).
On ex-husbands week, I will take DS to a sporting activity about three times a week, with the plan that ex-H will collect from there.
Ex-H will turn up late and uses a multitude of reasons why, when he does turn up, why he needs to leave to run an errand. DS needs supervision when he's there, so I end up staying with him whilst ex-h gets his car/goes to the shops/makes an urgent phone call etc etc.
Today, I said no, as I had to be somewhere else. Ex-h slammed his coffee cup down, and told me I was being unreasonable as I was 10 minutes later than usual due to traffic (I had messaged him to tell him this was the case). He then told me he couldn't see why I couldn't stay as he had planned on leaving and coming back later!
I would just say, 'this has to stop', but there are a couple of factors stopping me. Principally, I get lots of extra time with DS, which I absolutely love and would be loathe to give up.
The other thing is that my ex is a lazy so and so who would never take DS anywhere, no matter to the sporting activity he adores. I organise it, sort out the equipment he needs.
Ex-h only has to turn up and then take him back to his house-it's near his work, and no where near mine, but DS goes to school near my house hence my offer of a lift there.
Do I just need to grin and bear it for DS's sake?