Yahoo president Sue Decker isn't the only Valley executive with a troubled marriage. Commenters are still talking about our report three weeks ago that Google sales chief Omid Kordestani's relationship with his wife, Bita Daryabari, was on the rocks. Rumors are flying: One commenter says Gisel Hiscock, the New York-based Google finance executive with whom Kordestani's been carrying on an affair, is moving to Mountain View to be closer to Kordestani. Others contend that Kordestani and Daryabari are reconciling, and that he hasn't even moved out. My question: Why are so many people outside this marriage emotionally invested in it? Kordestani is hailed as a hero inside the Googleplex for building Google's multibillion-dollar advertising business from scratch. Daryabari is active in politics and philanthropy. Still, that doesn't seem to explain the obsessive level of interest in this heretofore obscure couple.