hobnob with (?.)
- associate with
- assort with
- be acquainted with
- be friends
- be inseparable
- chum
- chum together
- chum with
- clique
- clique with
- club together
- consort with
- cotton to
- fellowship
- flock together
- fraternize
- fraternize with
- hang around with
- hang out with
- herd together
- hit it off
- join
- join in fellowship
- keep company with
- know
- mingle with
- mix with
- pal
- pal up with
- pal with
- run in couples
- run with
- sort with
- take up with
- tie up with