[TexasCajun]

To me it looks like they were both vying for a spot at the bar as the other two girls get their drinks and take their time leaving. ...it actually looks like she moves in first, then moves a little left, trying to keep him from getting to the bar. ...words exchanged.

He is pushing or rubbing against her back as he tries to squeeze between her and the two that are leaving.

He didn't grab her wrist until she makes a fist.

[I cannot think of a name]

There is one brief instant of expression on her face, when she looks back at him, that leads me to believe they were not strangers. If everything that happened, happened in the video, then I definitely blame him. If something had been going on before and what we are seeing is just a continuing of the action, then I’d probably need more information.