"No, our relationship isn't toxic. I'm taking care of you!" Chris yelled at you. It wasn't the first argument like this. In your opinion he was too possessive and controlling, but in Chris' mind he was doing everything to protect you

Chris was literally getting sick and insane from this love. He was simply trying to protect you, from living this world without him, but Chris didn't know how to show it. He was acting insane, but if it was the only way of keeping you close, Chris will continue