Accidentally incest😐

Mandi • I’m a fashionable, artistic, nerd 😉
What happened if you found out the guy or girl your dating was a close blood relative that you had no idea that existed until a family member told you😕 I've heard some I know who dated their first cousin or half siblings that they had no idea about until a family member told them and they automatically broke stuff off period I would imagine that would be awkward especially if they had sex or anything 😐