Of course you could.
But you're implying to incest and this is definitely not incest.
May be it is possible in Muslims but not in Christian and I don't have awareness about the other religion
yes
No, I don't know thing so. Cause he isn't your blood or related to u in anyway expect by sister's marriage. Your brother in law if you are female is either you husbands brother or the husband of your sister, so i assume you must mean the brother of your sisters husband. This is two sisters marring two brothers and i think it is very common. But You should as your brother in law .
love has no explanation so you can love your brother and marry him......
When sisters and brothers marry it is called incest and is not a legal marriage in most parts of the world.
can I marry my sisters daughter
You can if your brother and his wife break up. but you have to be a man though. brother and sister can not marry.
yes they are not blood sisters or brother so you could married
yes because if the sisters a sister in-law then the brothers r 2
Yes you can marry her. She has no blood relation to you. She is just the niece of your brother's wife from her side. It is no different than if two cousins married two women who were sisters.
Yes
Yes, Cleopatra did marry Ptolemy XIII. When he died she married er other brother, Ptolemy XIV. The two brothers were the only husbands that Cleopatra had.