Dennis Quaid has reportedly filed a petition to stop paying nearly $14,000 in monthly child support to his ex-wife, Kimberly Buffington, after their twins graduated from high school this year. The couple married back in 2004 and separated in 2016.Dennis Quaid and ex-wife, Kimberly Buffington, welcomed twins Thomas Boone Quaid and Zoe Grace Quaid via surrogacy in November 2007. The 18-year-olds are graduating, with Zoe reportedly receiving her high school diploma on May 23, and Thomas is scheduled to graduate on June 3.Dennis Quaid is also a father to Jack Quaid, whom he shares with Meg Ryan.Why did Dennis Quaid file to stop child support payments?Quaid filed a petition on May 20 to stop paying Buffington $13,750 a month in child support, according to court documents that People and other outlets were able to access.According to the lawsuit, the former couple's 2018 divorce agreement contained a clause that said support payments may stop once the kids finished the 12th grade as long as they were still under 19 and enrolled full-time.According to reports, the deal also mandates that Quaid provide Buffington extra money if his annual income surpasses $1.314 million, in addition to the monthly installments.Instead of using his entire yearly salary, the actor has now asked that any further payment related to his 2026 earnings be allocated depending on the twins' graduation dates.Dennis Quaid married Kimberly Buffington, who is a real estate agent, back in 2004. Before formally separating in 2016, the pair filed for divorce several times during their relationship. Releasing a statement, the couple said:"After careful consideration, we have decided to end our 12 year marriage. The decision was made amicably and with mutual respect toward one another. We will always remain great friends and devoted partners in raising our children."When their divorce was finalized in 2018, they both agreed to share physical and legal custody of Zoe and Thomas. Later, Quaid reportedly consented to give Buffington a multimillion-dollar settlement that included payments for community property and spousal support.Four years later, the actor got married again, this time to Laura Savoie, and they are currently together.More about Dennis Quaid's familyDennis Quaid was married to German-born American actress Pamela Jayne Soles, whom he met during the shooting of the movie Our Winning Season. The couple got married in 1978, but soon divorced in 1983. Soon, he was married to Meg Ryan for ten years from 1991 to 2001.In addition to his twins with Buffington, Quaid and actress Meg Ryan have a son named Jack Quaid. Jack has since built a successful acting career with projects like The Boys, where he plays the mild-mannered, empathetic, and slightly neurotic Hughie Campbell, and other projects like Novacaine and Companion.The actor then married real estate agent Buffington in 2004, and the couple separated in 2016. Three years later, he met Laura Savoie at a business event. At the time, Savoie was pursuing a PhD at the University of Texas at Austin. He then got married to her in 2020 in Santa Barbara. Speaking to their 39-year age gap, he said:“It’s the closest relationship I’ve ever had with anybody. I don’t know why God had waited so long to bring her, for her to come along, but [I’m] really glad he brought her into my life, or I walked into hers.”In interviews and public appearances, Quaid occasionally provides updates about his children, despite the fact that he usually keeps his personal life private.Stay tuned to Soap Central for more information.