I'm going to give my boyfriend an STD out of revenge.
What is your reason for wanting to get revenge on your partner?
Well, he cheated on me and would constantly bad mouth me.
While it is understandable to angry and upset that someone cheated on you, getting revenge by giving them a disease is a very bad idea. Your boyfriend will be very angry and continue to badmouth you. It would be better to just let him go and ignore his behavior.
It's not my fault everyone knows I'm better than him. Besides, his badmouthing doesn't affect me.
Well either way, you should never be with someone who treats you in this way. You deserve to be with someone who loves you and remains faithful to you.