Dennis Quaid alongside CNN’s Wolf Blitzer at a recent White House correspondents’ dinner. (Linda Davidson/THE WASHINGTON POST)

The actor’s wife of almost eight years filed for divorce a week ago, on March 2, according to court documents obtained by TMZ. The filing — which identifies the petitioner as B.K. (reportedly for Kimberly Buffington-Quaid) and the respondent as W.D. (reportedly for Dennis William Quaid) attributes the end of the relationship to “discord or conflict of personalities ... that destroys the legitimate ends of the marriage relationship and prevents any reasonable expectation of reconciliation.”

In a statement to ABC News, a rep for Dennis Quaid confirmed that the divorce petition has been filed but added, “Contrary to what has been reported, a satisfactory settlement is being worked out for both parties. We will not be providing any further information on this private matter.”

According to TMZ’s coverage of this breaking celebrity story, the petition could be just the first step in a contentious court battle. At the moment, the Quaids are sharing custody of their 4-year-old twins, Thomas Boone and Zoe Grace, and divvying up their residences and various automobiles. (TMZ took particular note of language in the court filing that said the soon-to-be-former husband and wife should “cooperate with one another in using the Range Rover motor vehicle currently in B.K.’s possession.”)

Whether this ends amicably or in ugly fashion, it is unfortunate to see this marriage rupture less than five years after the couple struggled with the near-deaths of their children. The infants were accidentally given massive doses of Heparin while at Cedars-Sinai Medical Center in Los Angeles shortly after they were born. They recovered fully, but the incident prompted the Quaids to speak publicly about the impact of medical mistakes on “The Oprah Winfrey Show” as well as in other media outlets, and to testify before Congress. In the interviews that followed the overdose, they appeared to be united by their ability to recover from the traumatic episode.

Now, it seems, the “Big Easy” and “Rookie” star — soon to be seen onscreen as the husband of Brooklyn Decker in “What to Expect When You’re Expecting” — is facing his third divorce. His previous two marriages were to “Halloween” star P.J. Soles (they divorced in 1984) and, more famously, to Meg Ryan, from whom he divorced in very public fashion in 2001.