https://en.wikipedia.org/wiki/Carol_McCain#Reuniting_and_divorce
The McCains' marriage began to falter due to his extramarital affairs.[30] John McCain's next assignment was to the Senate Liaison Office within the Navy's Office of Legislative Affairs.[31] The McCains separated briefly, then rejoined.[21] His job was aided by the social life the couple conducted, entertaining Navy, government, and other people three to four nights a week at their Alexandria, Virginia home.[32] During this time she worked for Congressman John H. Rousselot.[33] By 1979, the McCains were still living together.[21]
In April 1979, John McCain began a relationship with Cindy Lou Hensley, an Arizona special education teacher and Hensley & Co. heiress.[21] John McCain pushed to end the marriage, and friends described Carol as being in shock.[21] The McCains stopped cohabiting in January 1980; he filed for divorce in February 1980,[12] which she accepted.[21] When asked by a friend what had gone wrong, she said, "It's just one of those things."[21] The uncontested divorce became official in Fort Walton Beach on April 2, 1980.[34]
John McCain would later say, "My marriage's collapse was attributable to my own selfishness and immaturity more than it was to Vietnam, and I cannot escape blame by pointing a finger at the war. The blame was entirely mine."[30] Carol McCain later said, "The breakup of our marriage was not caused by my accident or Vietnam or any of those things. I don't know that it might not have happened if John had never been gone. I attribute it more to John turning 40 and wanting to be 25 again than I do to anything else."[30] McCain's biographer Robert Timberg believes that "Vietnam did play a part, perhaps not the major part, but more than a walk-on."[35] John put it this way: "I had changed, she had changed ... People who have been apart that much change."[35] Ross Perot later said, "After he came home, he walked with a limp, she [Carol McCain] walked with a limp. So he threw her over for a poster girl with big money from Arizona [Cindy McCain, his current wife] and the rest is history."[23] Carols three children were initially upset with John McCain about the divorce, but later reconciled.[21]
But at least he married the woman he was in an affair with and didn't pay her off. Right Meghan ?