My soon-to-be ILs are lovely, lovely people and I'm very fond of them. However when we told them we were getting married DP's mother said 'No more [their names], please, Manatee - it's 'Mum' and 'Dad' from now on!'
I already have a Mum and Dad. I know it's really sweet, and says I've been welcomed into the family. I'm just not sure I'll be able to do it, even though I don't want to offend them.
AIBU?