Dean McDermott and Tori Spelling worked through his infidelity on Spelling’s TV show “True Tori.” (15/28)

Dean and Tori slept with each other the night they met, cheating on their ex-spouses respectively.

Jesse James was caught cheating on Sandra Bullock. (14/28)

Woody Allen’s relationship with ex-stepdaughter Soon Yi is one of the most famous celebrity cheating scandals ever. (16/28)