Not even Andy Cohen knows the answer to this one. However, he did reveal this is one thing from Season 9 of RHOBH that he's hoping to get to the bottom of at the upcoming reunion during an audience Q&A at the Watch What Happens Live with Andy Cohen For Your Consideration Emmys event in New York City on Monday, May 20. (You can see Andy talk more about Puppy-Gate with Lisa Vanderpump during her appearance on WWHL in April, above.)
Speaking of Lisa, when Andy was asked at the event if the RHOBH restaurateur will be attending the Season 9 reunion, he said it is "unclear." The speculation around who leaked the story to Radar Online has caused a rift between Lisa and the rest of the Beverly Hills Housewives this season.
Andy was also asked during the Q&A if he would "regret" it if Lisa didn't come to the reunion. "Look, I always want to see her. I always want her to be there. She always hates me at the reunions because she doesn't like my questions, so I don't like the idea of her coming and hating me because I have a great deal of affection for her," he said in response. "So we'll see."
Watch Andy dish on the latest RHOBH drama when Erika Girardi stopped by the Clubhouse last week, below.