They just couldn’t live without each other. George W. Bush’s parents passed away just over seven months apart, and the former President of the US just revealed the secret to their inspiring love story. It’s simple: George H.W. Bush never said “no” to his wife of 73 years, Barbara Bush.

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George W. opened up to CBS’ 60 Minutes on Dec. 2 about his parents’ marriage, which happens to be the longest union in presidential history. “When I talked to your mom last time, she said that he never says ‘no’ to her,” host Norah O’Donnell said to the 43rd president, according to a CBS News transcript. “Well, that’s why they stayed married for 70 years,” he replied. “It’s a true love story. As mother said, ‘It’s the only man I ever kissed.'”

George H.W. was filled with love, and Barbara wasn’t the only one he shared it with. “He was a great father,” George W. gushed. “He gave us unconditional love. Some of us tested it, I might add. There was no doubt about how much he loved us, which I think is a very important gift that a father can give to his children.”

George W. announced on Nov. 30 that his loving father had unfortunately passed away. On Instagram, he shared a glimpse into his parents’ inspiring marriage when he posted a photo of the lovebirds walking arm in arm toward an awaiting helicopter as President and First Lady. “Jeb, Neil, Marvin, Doro, and I are saddened to announce that after 94 remarkable years, our dear Dad has died,” he wrote.

“George H. W. Bush was a man of the highest character and the best dad a son or daughter could ask for,” he continued. “The entire Bush family is deeply grateful for the 41’s life and love, for the compassion of those who have cared and prayed for Dad, and for the condolences of our friends and fellow citizens.” There is no doubt that George H.W. will be missed!