If Leo's relationship with you was toxic, the reason of it all would be you.

You manipulated him, turned him into a violent person that everyone scared of. You never loved him, but he had thought he had a place in your heart.

Had been manipulating him for years, you had gotten some boredom yourself. You didn't like being bored, as an idea came up. You broke up with Leo.

"What?" He stuttered as his voice cracked, "That must be a joke, right? Did I do something wrong?"