AIBU to not want to pay petrol money to my ex?

[BabyHugg]

So... I'm getting married in March and then going on our honeymoon for two weeks without our children. I have 3 children with an ex and my DF has 1 child with his ex. We also have a baby together. My oldest lives with my ex and the other 3 children all live with us and see their other parent every other weekend and every Tuesday night. We have asked the other parents to look after the children while we are away (in laws are coming to ours to look after baby) and they have agreed to this but my ex has asked me to give him petrol money to transport the children to school while we're away as he lives 30 mins from their school. AIBU to not want to give him the petrol money for this? He pays no maintenance towards the children so therefore I don't pay maintenance for our oldest that lives with him. Besides they're his kids too so shouldn't he be willing to take them to school?

I don't think you are being unreasonable to ask him to do exactly what you do every school day for 2 of your 3 children for a couple of weeks which is not that long at all

Definitely don’t give him petrol money. He’s their dad!!

They are his kids. He’s not doing you a favour by taking them to school, their his to take. No petrol money. Goes to show how he thinks that he would even ask.

*they’re