We have that "don't care" attitude on what others say or think about our relationship, but are curious anyway. Dear Jus' need advice from a 3rd party..., Negative reactions to cousins who pair off stem largely from the belief that children from such relationships may have physical and/or mental abnormalities.
Newborns with genetic disorders such as spina bifida or cystic fibrosis are more likely to be born of blood relatives because previously unexpressed recessive genes are more likely to appear.
In the past, cousin marriage was practiced within indigenous cultures in Australia, North America, South America, and Polynesia.
Various religions have ranged from prohibiting sixth cousins or closer from marrying, to freely allowing first-cousin marriage.
In some countries outside that region, it is uncommon but still legal.