I hate my ex with a passion
Why do you hate him so much?
I spent a lot of time with him but he never made me feel important.
You should move in since he is already you ex boy friend. Being mad at someone you no longer are with is nonsense.
I will hurt him so badly that he will regret this breakup.
I don't think you should even think about him this much, you should just let the past be the past.