flock together (?.)

• accompany
• assemble
• associate
• associate with
• assort with
• attend
• band together
• bunch
• bunch up
• chum
• chum together
• chum with
• clique
• clique with
• clot
• club together
• cluster
• collect
• combine
• come together
• companion
• confederate
• congregate
• consociate
• consort with
• converge
• copulate
• couple
• couple with
• crowd
• date
• fellowship
• flow together
• forgather
• fraternize
• fuse
• gang around
• gang up
• gather
• gather around
• go along with
• go with
• hang around with
• hang out with
• herd together
• hive
• hobnob with
• horde
• huddle
• join
• join in fellowship
• keep company with
• league
• link
• mass
• meet
• merge
• mill
• mingle with
• mix with
• muster
• pal
• pal up with
• pal with
• rally
• rally around
• rendezvous
• run in couples
• run with
• seethe
• sort with
• stream
• surge
• swarm
• take up with
• throng
• tie up with
• unite
• wait on