Seventeen-year-old Cheyenne has been dating Josh, 28, for a year, and says she’s totally in love, and they’re planning to get married.

Cheyenne's mother, Jeanne, says her daughter was the All-American girl -- a cheerleader, track star and straight-A student on the honor roll -- but ever since she got together with Josh, she has become a "behavioral nightmare."

Josh says there’s nothing wrong with his relationship with Cheyenne, and he can’t wait until she turns 18, when her mother will no longer be able to butt into their love life.

Dr. Phil digs a little deeper into Josh’s relationship history and offers stern words on parenting to Cheyenne's mother.  

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Dr. Phil asks Cheyenne if it seems odd to her that a 28-year-old man is dating a high school student. Hear her surprising answer.

Learn about the numerous red flags in Josh's relationship history.

Jeanne defends herself against her daughter's accusations of abuse and discusses with Dr. Phil  what she learned in parenting classes.