Brooke

Brooke was on the Maury Show to prove that she never cheated on her fiance, Ruford and that both of their children were his. She arrived in a wedding dress. The lie detector test determined that she did cheat on him. They broke up while Brooke cries over Ruford leaving her and their wedding is called off because she cheated on him.

Justification
Brooke claims that she participated in a 2nd threesome with Ruford and his friend, so that could have compromised the results.