I cuckolded a classmate and didn't tell him
Why would you infringe on someone else's relationship?
His girl was hot and I never liked him anyways.
Getting into someone elses relationship without their consent is an unethical thing to do. You should own up to it and tell him what you did.
Fuck him. Life is grey
What you did was selfish and wrong. You shouldn't have slept with her knowing she was in a relationship.