It wasn't a very Merry Christmas for Tori and Dean this year. Tori Spelling's husband of seven years, Dean McDermott, cheated on her with another woman. While promoting his gig as host of Chopped Canada in Toronto on Dec. 6, McDermott invited 28-year-old Emily Goodhand, a woman he met that day through friends, to his room at the Fairmont Royal York Hotel -- where they had sex, she tells Us. "He told me he and Tori had a sexless marriage," says Goodhand, who stayed over at his hotel the following night too. "I believed him."

"Tori is obsessed with having a picture perfect family, and thinks it's a big part of her image. Commenting or addressing the cheating would taint that image. Things are very tense in the house right now, and Tori is making Dean's life hell. Even though she is trying not to fight in front of the kids, it's impossible. She has been crying and screaming at Dean, and saying he has ruined everything, including Christmas."