I'm going to spread news about my cheating girlfriend
Why do you want to tell other people that your girlfriend cheated?
I can't bare what she did to me.
Cheating on your partner is one of the worst things you can do when it comes to being in a relationship. If it really happened, then telling people is not a bad thing. This may help you to get it off your chest and allow you to feel more positive moving forward.
I agree with you about how cheating is wrong.
I hope you can find a new person who can respect you. Being cheated on can bring so much hurt and feelings of inadequacy.