Which of the following questions is correct? Why?
1.Who would you like to marry?
2.Who would you like to marry to?
3.To whom would you like to marry?

Question

Which of the following questions is correct? Why?
1.Who would you like to marry?
2.Who would you like to marry to?
3.To whom would  you like to marry?

Answer

Only the first one is correct. You marry a person: you don't marry 'to' a person.

Who would you like to marry?  I'd like to marry my childhood sweetheart.

(NB We do use 'to' with the phrase 'get married to'. For example: Who did Bob get married to?  He got married to his sister's best friend.)

Answer

Who do you want to marry?  
I want to marry her.
She's married.   
Who's she married to?   (not 'with')
She's married to me!  
oh, I didn't know you were married!
Yes, we got married a few months ago.
:)