You should say sorry to your partner.
Jack found himself cheating on his partner a week ago and is now with his girlfriend his cheated on.
Jack wants to confront his girlfriend about the fact that he cheated.
Jack tells his girlfriend that he cheated and is extremely sorry.
Jack comes clean about his mistake to his girlfriend but doesn't apologize and says that it was worth it.
Jack's girlfriend is accepting of Jack, not too angry, and Jack feels he has control.
Jack's girlfriend flips out, begins screaming, and they both engage in argument.