Answer: When Katie decided to sneak out with her friend's boyfriend.
Explanation:
Katie never thought her friend would find out that she was dating her boyfriend, but what Katie didn't know was her friend followed her when they both said goodbye in college.
It was very painful for Katie's friend to watch her friend go out with her boyfriend and then act like nothing was wrong. Her friend kept this situation a secret for a few months until she waited for the right moment and told the truth. Katie suspended outings with her friend to secretly date her boyfriend. Her friend's boyfriend always told her that he was going to break up with Katie but he never did. There were times when Katie spoke badly to her friend but the anger was because when she saw her friend and her boyfriend together she imagined her being in that place.
