I slept with an engaged coworker and now facing the consequences.
What is gonna happen to you now?
I'm afraid that the other coworker may find out and I'll get fired
It is wrong to knowingly sleep with someone in a relationship. You should come clean and face the consequences. You both might be fired to avoid sexual harassment claims.
I don't want to be kicked out of my job because of this.
I know that you're scared, but it's not good to keep secrets about sleeping with an engaged coworker. I think it's time to come clean about it.