Adrienne Maloof and Dr. Paul Nassif are reportedly separating.

Nassif intends to file for legal separation from his wife of nine years early this week, TMZ reported.

The Real Housewives of Beverly Hills couple has reportedly discussed Nassif's plans, so Maloof won't be surprised when the paperwork gets filed.

As for what went wrong in their relationship, the taping of The Real Housewives of Beverly Hills' next season was apparently very demanding and tiresome for both Nassif and Maloof -- who also have three sons together -- and put stress on their marriage. According to RadarOnline, cheating or other love interests have nothing to do with the split.

"Adrienne was dragged through the dirt during filming of the upcoming season, and it really wore on her. Paul and Adrienne have always fought, it's how they were as a couple. However, at this point, they realize that they are just want very different things, and neither one of them is happy in the marriage," a source told the website.

"Neither one is ready to pull the plug and file for divorce, they are trying to figure out the best way to deal with this, and there is a lot of love between Paul and Adrienne. If they didn't love each other as much as they do, either one would just walk away without looking back. They aren't at that stage yet, and are discussing a separation," added another source.

Maloof explained the separation isn't just about herself and Nassif.

"I'm so sorry that this is happening but my children are my life and sometimes we need to do what's best for them," Maloof told RadarOnline.