Some how managed to find myself and DP minding our two nephews one day every weekend. It was supposed to be occasional and shared across a few different relatives so SIL and partner could work extra to pay higher mortgage costs.
The shared thing doesn't seem to be happening.
They are off on an expensive holiday in a few weeks and found out today that last week's "work" was a day of socialising.
AIBU to feel like a bit of a mug subsidising their lifestyle?