Hit it off

Meaning:

We can use this one to describe when two people are enjoying a good relationship. It's more commonly used, however, when two people meet for the first time and they immediately like each other.

Example sentences:

1. Did you hit it off with him?
2. We hit it off.
2. They hit it off right away.

Example dialogue:

Two friends are talking about one friend's date last night.

A: Did you have your first date with Jane last night?
B: Yeah, I did.
A: Did you two hit it off?
B: Yeah, we did. We really hit it off.

Practice:

Who did you not hit it off with when you first met him or her?