But The Real Housewives of Beverly Hills stars may still have a shot at making their marriage work.
Sources tell RadarOnline.com that the pair have an "excellent chance of reconciling because they both love each other so much."
"They do have their issues to work through but they are committed to try and save their marriage," the insider said.
"Paul and Adrienne talk on the phone every day and have seen each other. They needed to take a break from the marriage but neither one of them is dating or seeing anyone else.
"They are handling this situation with true class and are doing everything possible to minimize disruption to their three sons' lives.
As OK! previously reported, Adrienne was keen to keep the divorce clean and drama free if it does go ahead.
"Adrienne is hoping that she can keep things clean and not get into a bitter public fight with Paul, but she is going to do everything in her power to get full custody of their kids," a source said.
Adrienne and Paul have been married for nine years and she recently skipped out on The Real Housewives of Beverly Hills reunion taping because the separation announcement was too new.
"Adrienne and Paul are going to see if they can get back to a place of more love, and less fighting," the insider added.
Season three of The Real Housewives of Beverly Hills premieres this fall on Bravo.