I think I read this story in Omni magazine in the '80s.
It's about two lovers who discover that whenever they're touching each other, time stops for everyone and everything else. Time just stands still outside of their bedroom - like hitting pause on a VCR.
I do remember one small detail: these two people tried to experiment with this ability, and they discovered that they could prepare meals, and that they would stay hot while time was paused. They experimented in other ways, too, though I cannot recall how.
Sometimes my searches turn up a story about two lovers who are time travelers - there is jealousy and some paradoxes - but the story I am thinking of is not a story about time travel, at least not directly.
I've tried googling for it, but the search terms (e.g. "lovers touch time stops") are so non-specific that all I get are false hits. I've tried looking here both using Search and Similar Questions. No joy.