Breaking up texts!!!!!

Victoria
I found out my boyfriend cheated on me again!!!!! So I decided that I should just stop being an idiot and just leave him, our unborn child and I do not need to be going through this unnecessary pain when he's still a child. We will not suffer for someone like him. But the thing is he does not know About The baby nor about that I know he cheated on me again... So instead of saying I know about him cheating again and dumping him. I want to hurt him. Hurt him the way he hurt me! I want to break his heart in a million pieces. So my question to you ladies is what are Heart breaking words and actions to break up with someone????