India, July 5 -- You're still together, sharing a home, a routine, maybe even a future but something feels off. The spark is dimmer, conversations are shorter, and that effortless closeness you once had seems to be slipping away. Sound familiar? You're not alone. According to relationship expert Jeff Guenther, there's often one powerful yet overlooked reason why many couples feel emotionally distant over time. (Also read: Dating coach explains why compatibility matters more than chemistry in relationships: 'Don't chase the instant spark' )

In his June 12 Instagram post, Jeff shared insight from his 20 years of experience, "What is the number one reason your relationship doesn't feel as close as it used to? Well, I can tell you, it's not ...