My ex is taking our son away for a week but I will still need to cover his nursery fees (as I would when I go away). Fees for a week are £250, ex pays £50 a week in maintenance. So Id like to ask him to cover the remaining £200 to cover the nursery fees whilst he is on holiday (deducting his current maintenance payment) My ex is a very difficult man and tries to find the sinister in everything I do, so I am dreading asking him. AIBU?