I think the time I was cheated on and took revenge
Why were you cheated on?
I think he was bored of me.
You should walk away from a conflict instead of plotting revenge. You might get hurt or you could really hurt other people.
It just made me happy to mess with him.
I think it's not healthy for you to plot revenge against someone, as you can get obsessed with it instead of focusing for the future and moving on with a more healthy relationship. I am sorry that you were cheated on but it's time to erase him from your life.