Watch: Diane von Furstenberg Reacts After Husband Barry Diller Comes Out as GayDiane von Fürstenberg's decadeslong love story with Barry Diller continues to unfold. While the couple wed in 2001, their romantic history dates back much further, which the fashion designer celebrated in a heartfelt post on social media. "Today is the 50th anniversary of the BIG BANG !!! The day Barry and I fell in love !" she wrote on Instagram Oct. 25. "He opened the door of his heart and never closed it !" And the 78-year-old has clearly embraced every chapter of her life with the businessman. "The first day of a long, colorful, happy journey .... UNCONDITIONAL LOVE," she continued, adding three red heart emojis. "Thank you BD." Earlier this year, Barry, 83, offered a rare glimpse into his relationship with the style icon in his memoir Who Knew, addressing speculation about their marriage while also publicly coming out as gay. "I've lived for decades reading about Diane and me: about us being best friends rather than lovers," he wrote in the book. "We weren't just friends. We aren't just friends. Plain and simple, it was an explosion of passion that kept up for years."readColton Underwood Details the "Shame" He Felt Losing His Virginity Before Coming Out As Gay"Yes, I also liked guys, but that was not a conflict with my love for Diane," he went on to detail. "I can't explain it to myself or to the world. It simply happened to both of us without motive or manipulation. In some cosmic way we were destined for each other." And while Barry's admission was news to the world, it certainly wasn't news in his world. After all, Diane recently insisted her home life remained the same as it always had.

Gregory Pace/Shutterstock"What's the difference?" she said in an interview with Variety published Oct. 16. "I don't understand. But it doesn't change anything. I'm sorry-it's a stupid question." Diane also acknowledged her previous marriage to Prince Egon von Fürstenberg-who shared his own bisexuality after their breakup-though she was equally unfazed by the matter. "I married two gay men, OK?" she told the outlet. "I don't know why, but to me, they're not gay, so it doesn't make any difference.

Keep reading to see what more celebrity couples have said about their long-lasting marriages...

Instagram/Mariska HargitayMariska Hargitay & Peter Hermann"I never thought that I would laugh this much in my marriage. That is such a fundamental ingredient of who you are, this insistence on joy," Hermann detailed to his bride of their partnership of over 20 years in Marlo Thomas and Phil Donahue's 2020 book What Makes a Marriage Last. "And I think what sustains our marriage is that I know you love me in spite of who I am, and that is the definition of grace."Seeking out that happiness is key. Even after a particularly robust argument, "One of us will test the waters with a joke-about the very thing we were fighting about," Herman shared of life with the Law & Order: SVU star. "It's like one of us says, 'I'm not saying I was wrong, and I'm not still insisting I was entirely right, but can we at least inch our way back toward the place where we caught at stuff together?' Once that happens, it's a pretty good sign that things are on their way to getting patched up."Erik Pendzich/ShutterstockChip Gaines & Joanna GainesThey've avoided need for any major renovation by sticking to the same advice they got in premarital counseling ahead of their 2003 vows. Even five kids in, Tuesday date nights are a must and they've held off on purchasing a TV, instead finding other ways to connect. But if Chip were to offer any tip to follow, it'd be to pursue the person you love "like a hornet." Some two decades in, he said, he still feels like the guy hoping to get a second date. "I'm not saying she'd never cheat on me," he explained, "but it's not going to be because I never told her I loved her or because I didn't send her flowers or I forgot our anniversary." Cindy Ord/Getty ImagesKyra Sedgwick & Kevin Bacon"My first piece of advice is not to take advice from celebrities," Bacon joked of his 36-year union. It's as succinct as their other go-to, "Keep the fights clean and the sex dirty," a phrase developed specifically to end any further chatter about their marriage. Truthfully, though, they make it a point not to let arguments linger, rarely digging in for the sake of the victory. "Honestly, we don't like to fight, so when we actually are in an argument, we're both looking for a solution," The Closer actress explained to Thomas and Donahue. "For the most part we're struggling to get back to everything being okay, because it sucks to fight." Because, when it comes down to it, she continued, "There is no Plan B. No matter what, we want to work it out."Andrew Toth/FilmMagicMichael J. Fox & Tracy PollanOver 37 years into marriage, the actors have mastered the art of fighting fair. "Tracy and I don't pick scabs," explained the Family Ties alum. "In some marriages, people look at