Can you explain to me what's the meaning of this expression: "to hit it off with someone"?
Could you explain what's the meaning of it in this sentence:
"It's incredible how you hit it off with Marry."?

Thanks!

Question

Can you explain to me what's the meaning of this expression: "to hit it off with someone"?
Could you explain what's the meaning of it in this sentence:
"It's incredible how you hit it off with Marry."?

Thanks!

Answer

Hit it off (with someone)
  Fig.: to quickly become good friends with someone.

Source: http://idioms.thefreedictionary.com/hit+it+off