this has always been a question that's been stuck in the back of my head that I've never bothered to search up.
Siblings A1, A2, B1, and B2. Siblings A are related, Siblings B are also related, but not to Siblings A.
A1 is married to B1
A2 is dating B2
It seems like a simple answer but I wanna know if this is considered some sort of incest because, y'know, they're your in-law.
tl;dr is it ok to marry/date your in-law's sibling