Real Housewives of Orange County Divorce

The Real Houswives of Orange County is losing another housewife -- or at least, the "wife" part.

Tamra Barney's husband Simon filed for divorce Thursday, the same day an episode aired in which Tamra told her mother her marriage was falling apart.

The couple's marital ups and downs -- but mostly downs -- have been publicly documented throughout the fifth season of the Bravo reality show. Simon alleged infidelity in the divorce filings; Tamra has denied those claims via her Facebook page.

The Barneys have three young children together. Simon is seeking joint custody of the kids.