Hi I have an agreement with my ex who pays (what he says is) the correct amount for his children. when we agreed to this he said he would pay towards things like school coats and large sums of money. Both children have a trip coming up costing in the region of £200 each. i have asked him about this before and been ignored so i have forwarded the letter to him today. aibu to ask for half of this money? all of a sudden he seems to think the CM covers everything and he shouldnt pay extra despite our original agreement. how can i word it to him to explain that he is a nugget if he thinks his payments came close to covering this and he is getting off lightly.