I am going to mess up my parent's marriage.
What is your reason for wanting to ruin your parent's relationship?
I'm angry with them and I want to see them suffer.
I know that you're angry with them and you want to hurt them, but damaging their relationship is not appropriate. You should discuss your differences with your parents and work them out. Lashing out and hurting others is not appropriate.
I will talk to them about it if it will help. I'm glad you talked to me about it.
Interfering with relationships in general is a very mean thing to do. Glad you understand where I am coming from and happy that you are going to allow your parents to have their relationship be undisturbed.