Justin says he has cheated on his fiancée only once; returning guest Kristy is accused of cheating on her man with several others, including his teen son; Laurie thinks her boyfriend is being unfaithful again.

Bridget is convinced that Willie cheated on her; Tabitha wants to find out if Justin is cheating on her; Chavella wants proof that DeCarlo is no longer cheating on her; couples seek lie-detector test results.