Take it from Olivia, 33, a stay-at-home mom in New Jersey who relies on occasional maintenance sex to keep her relationship energized.
"We'd been together two years by then, but we were both stunned and didn't know what to say. "We were on the top floor of the resort, so we knew no one was above us to see or hear us.
"Hopefully you're growing and changing sexually too. "People in long-term relationships sometimes crave excitement and stimulation, but don't know how to get it with their partner," explains Meers, who adds that this is one of the reasons people stray outside the marriage.