It’s easy to assume that if a couple has made it 20 years, they’re in the clear. But the rise of “gray divorce”—splits happening after decades together—tells a different story. Long-term relationships don’t usually end because of one dramatic event; they unravel slowly through habits that build up over time. Many couples don’t even realize they’re drifting until the emotional gap feels too wide to close. The good news is that these patterns are often predictable—and preventable. Here are six relationship habits experts say can quietly lead to breakups after 20+ years together.
