DH and I separated in early August, he officially moved out at the end of August. Everything reasonably amicable.
So FIL invites DH round for Sunday lunch (DH went and we rearranged his access day), only it wasn't just FIL and DH, but SIL, BIL and their DC were invited, excluding our 3 DC.
I am pretty pissed about this as FIL has not seen the DC since July and has not such much as called them (not me) to ask after their welfare etc.
So AIBU?