get chummy with

Bask in the sun by yourself, or get chummy with the neighbors.

Escaping the hubbub in Rome, I get chummy with the winds of the past — and connect with the pleasures of the moment.

He does his best, however, to get chummy with his one-time-only customers, telling couples they’re “cute” or criticizing the drinking habits of “fancy pants artist types.”

Get chummy with big partners. The bigger your initial partners, the bigger your company looks. 

If you think I’m telling tall tales, get chummy with some white cop who works in a Black Belt district and ask him for the lowdown.