Yes
Unfaithful, a cheater and many other names that are inappropriate for me to say on this website.
If person married to your brother is a woman? She is your Sister-in-Law.
If they were to get married then she would be your sister-in-law.
I would call a person with many boyfriend a person with many boyfriends.
If you got pregnant with you ex and then married his brother, then you kid will should call your husband dad even though he is no the real father.
Your husband would call her Niam Tij, so if she married the older brother, you can just called her Niam Laus.
You can call him anything you wish, but there is no legal relationship.
Cutie
I'd use her name. If the Brother in law is married to your sister, she would be your nephew's wife. And you are not related by blood.
I would.
You still call your brother, your brother.
If your brother-in-law is the brother of your wife, then his brother-in-law is you.If your brother-in-law is the husband of your sister, then his brother-in-law is you or one of your other brothers.Either kind of brother-in-law can also have brothers-in-law who are married to other sisters he may have. They are not related to you at all.