Heidi Klum and Tom Kaulitz, 13 Years
The former supermodel married her 29-year-old Tokio Hotel guitarist husband when she was 45. They first started dating in 2018 and tied the knot the following year with a lavish Italian wedding. She said of Kaulitz, "He's an amazing person. I couldn't be happier."
Michael Douglas and Catherine Zeta-Jones, 25 Years
Though they're 25 years apart, Douglas and Zeta-Jones share the same birthday, September 25. They met at the Deauville Film Festival in 1996, and Doublas proposed in 1999 after confirming rumors that Zeta-Jones was pregnant. After a brief separation in 2013, they have since gotten back together.
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