Avery, and her best friends, Max and Lindsay, all discover they're dating the same guy, and plot revenge. Meanwhile, Tyler is accused of cheating on a test and must prove his innocence.
- G. Hannelius as Avery Jennings
- Blake Michael as Tyler James
- Francesca Capaldi as Chloe James
- Stephen Full as the voice of Stan
- Regan Burns as Bennett James
- Beth Littleford as Ellen Jennings
- Mick as Stan James
- Avery, Lindsey and Max had a new boyfriend, Brian
- Stan said Good Luck Charlie which was a past show and Good Luck Charlie was the ending tagline of the show.
| To view the Guess Who's a Cheater? gallery, click here.
Community content is available under CC-BY-SA unless otherwise noted.