“How do you have sex onstage?” That’s the central question of “Good Sex,” an unconventional play that spotlights intimacy coordinators. Here’s the unorthodox part: The show pairs together two unacquainted actors who have…

“How do you have sex onstage?” That’s the central question of “Good Sex,” an unconventional play that spotlights intimacy coordinators. Here’s the unorthodox part: The show pairs together two unacquainted actors who have…