Spoiler alert! According to reports, a "Bachelor" contestant in the upcoming season wasn't faithful to new "Bachelor" Jake Pavelka.

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According to reports by the NY Post and Us Weekly, one of the 25 women vying for Pavelka's heart cheated on the Texas pilot with a crew member from the show.

Although ABC hasn't confirmed reports that a woman had an affair with a member of the crew, the station made the news public when it aired a brief promo about the unnamed female contestant late last week. During the promo, a voiceover says, "It wouldn't be 'The Bachelor' if it didn't start with one shocking scandal." Then a woman -- presumably one of the contestants -- says, "She's been having this sexual affair with somebody else in the Bachelor house."

There is also speculation that the sexual relationship could be between two women in the house.

Find out if the rumors are true when "The Bachelor" premieres January 4 on ABC.