You should apologize when you betray your friends.
Jon kissed his friend's girlfriend wile drunk and his friend confronts him about it.
Jon wants to react to his friend's confrontation.
Jon says he's really sorry for what he did saying that he was drunk at the time and asking for forgiveness.
Jon tells his friend that since their girlfriend was willing to kiss Jon they should blame their girlfriend for what happened.
Although Jon's friend is upset he's happy Jon apologized and forgives him over time.
John's friend thinks Jon is scummy for betraying them and doesn't consider Jon a close friend any longer.