I'm newish to this so don't really know all the right terms so forgive me!
I've got 2 kids, DD2 and DS3. Every now and again they stay at my parents overnight together. They've got there own little room together there and they love it.
In the past MIL has just had DS overnight alone but this is when DD was alot younger. DD seemed a bit lost when he wasn't here and it was clear she missed him. She hasn't had either for a while due to FIL ill health etc.
Now she feels ready to have them again but only one at a time. I'm really not happy with this, they have a very close bond and one isn't going to understand why the other has gone to stay with nanny without them.
So, Aibu to think that if you can't have one of them then you shouldn't have either. I really don't think it's fair but I'd like to see what others think!