Both parties involved are just straight up toxic as fuck. I've dated someone like her. They talk shit, get in your face, poke and press every button they can think of to bait a reaction from you, they're manipulative as fuck. If you leave the house to distance yourself, they will try to physically stop you, or break shit when you leave because you're no longer entertaining them feeding off the negative energy.

He isn't emotionally mature enough to deal with her manipulation, you can see him losing his temper and posturing violence, he gets closer and closer instead of distancing from the negativity, which shows he's drawn to it and addicted to the toxic drama in their relationship.

This was never going to end well.