Your sister's son is not related to your husband's sister's son, because they share no common ancestor.
Well, it depends how close you are to your husbands family. If you really want to know they are cousins-in-law.
your second nephew
You are each others cousins.
Yes, because your daughters are sisters and since their husbands are your son in law's that would make them brother in laws.PS. I hope your daughters are veryhappy, congrats!! :) ,,Chameleon5,
My brothers-in-law are my sisters' misters. I don't know which of the sisters' husbands he is.
She's you're american horse pet.
spain
He is your step son.
Your nephew's first cousin may or may not be related to you, depending on how the cousin is related to your nephew. Your nephew's cousin may be your child, or the child of one of your brothers or sisters. Your nephew is related to you by being the son of your sibling. That sibling has a spouse who may also have borthers and sisters. The children of any of those brothers and sisters are also your nephew's first cousins, but are not related to you.
Your cousin in law
Uncle or Auntie.
Your sister's son is your nephew and you are his aunt (if you are female) or his uncle (if you are male.