By bashing his dried-up sex life with estranged wife Courteney Cox on The Howard Stern Show, David Arquette’s marriage is doomed, according to celebrity relationship expert Trina Dolenz. Telling the world-famous radio show host that the former couple hadn’t been intimate in four months “was like throwing a powder keg into an already raging fire,” Trina, who appears on VH1’s Tool Academy and is the author of Retool Your Relationship: Fix the One You're With, tells In Touch. “It was like giving Courteney a good slap in the face. He betrayed her.” So why did he lash out? Trina believes David, who In Touch exposed was having a top-secret romance with aspiring actress Jasmine Waltz, wanted to wash his hands clean of any wrongdoing in the breakup. By claiming she didn’t provide him with enough intimacy, “He is clearly laying the blame at her feet,” she adds. After In Touch exclusively revealed their split, Courteney and David confirmed their separation on October 11.