So basically my partner wants his half brother's (same dad) younger half brother (same mum) to come and meet our baby.
He has a daughter who is 2 years old who he says is our kids cousin.
My partner is no relation to him or his daughter biologically but because they share a half brother he feels as if it's his brother as well and that they are family.
He dosent really know him and doesn't have his number and has only met him in the last 10 years.
They only hang out if it's with their mutual half brother.
I know the 'brother' is very anti vax and has not got his 2 year old vaccinated despite living in a city where it has had a lot of cases of measles.
Baby is too young to be have the MMR and I am extremely worried about my baby meeting this 2 year old.
AIBU to feel like this?