I'm thinking of ghosting a serious relationship.
How are you going to ghost them?
Well, he's been cheating on me every night. So, I would throw out his food, then leave his door unlocked and hope someone steals his laptop. Then I kiss him goodbye and leave without ever returning.
That seems like an extremely harsh way to end a relationship. If you are unhappy in a relationship, you should be honest and break up with them and tell them why rather than ghosting them. Ghosting them will just leave them hurt and confused and feeling frustrated.
He deserves it for breaking my heart with his cheating.
I understand you are angry, but choose this way to end the relationship is not going to do what you think it will. Tell him you know about the cheating and end it.