Messed Up
he Justin combs cousin
The cousin to a seagull is called a tern.
Your first cousin.
Your cousin in-law
I've only heard them called pouches.
The English language does not use the phrase "cousin brother." The brother of your cousin is also your cousin.
Zayn Malik doesn't have a cousin called May.
Africa About half the states of the USA permit the marriage of first cousins.
In the sense of what is the name of the relationship, that would be "second cousin-in-law", though if you are that close to your second cousin and his wife, you could just say, "cousin". In the sense of how you would address her, it would be the same as with your second cousin. Just the name that she goes by. After all, "second cousin", or even "cousin", isn't a title like Uncle or Aunt is.
Ask him or her.
Yes. Most people would say that you are supposed to like your cousin.