hit it off

Idioms  

1. Get along well together, as in I was so glad that our parents hit it off. In the 17th century this phrase was put simply as hit it, the adverb off being added only in the mid-1800s.

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Example Sentences

"To say we hit it off was an understatement. We were literally joined at the hip," she said.

From BBC

Some people hit it off with friends or colleagues from the start.

From The Wall Street Journal

My dad and Mr. Larkin have really hit it off, which is kind of weird but cool.

From Literature

“So, we got together and hit it off just like that. It was like writing with myself, really.”

From Los Angeles Times

They hit it off so well right away that both knew they had to make it work.

From Los Angeles Times