My sister had a child with a person, but they didn't marry. that person's sister likes me, would it be okay to date my Sister's boyfriend's sister?
Answers (2)
yes, you are not relatives at all.
Sounds fine to me. I know of two brothers who married two sisters from the same family. My Uncle on my mums side is married to his wife, who is the sister of my uncle, who is married to my aunt on my fathers side. So there's a three way family cross over.
It happens a lot more than you might think.
You're definitely sure?