Who says touring partners have to actually get along?

Jeremih proved that that's not a mandate when he went off on PARTYNEXTDOOR during his Dallas, Texas, show on Friday night during their "Summer's Over" tour.

The "Birthday Sex" crooner went on a rant, dissing PARTYNEXTDOOR and his crew during his closing set. He went on to call PND and his people a bunch of "b***h a** n****s" before going in on his artist credibility, claiming he doesn't even sing his songs while performing.

In the clip, he apparently even tries to hop off the stage and enter the crowd, but is stopped by folks who may either be security or PND's crew. That wasn't a good idea as it only seemed to add fuel to the fire.

"This n***a been trying to stop me since this tour started," he said. "He can't stop me!"

Take a look at the clip, below:

What is really going on between these two?

Recap the moment PARTYNEXTDOOR dated Kylie Jenner in the video, above.