- "Hey, I'm your boss. I can give you the day off"
- —Jeff to Kelly
To convince Kelly that Zack was telling the truth, the others decided to go back to The Attic and catch Jeff in the act with a picture.
Kelly suddenly appears and sees for herself that Jeff was being unfaithful to her. She confronted him and asked why he did it, especially after she broke up with a great guy like Zack. Jeff makes a pathetic excuse that they were never going steady and even though he thinks she is special, he isn't ready for a commitment. Kelly then dumps him saying she is sorry she ever fell for a dishonest jerk like him.
Jeff then walks away, presumably to find Jenna and start a fresh relationship with her, but it is assumed that after finding out that he had been seeing Kelly at the same time that she dumped him as well.
Kelly apologizes to Zack for not listening to him and goes to relieve herself of losing Jeff by having a few minutes of screaming in the girl's bathroom.
After this, Jeff is never seen on the show again.