attackfish

Yes, the closest thing I can think of to a human couple being thrown into the world of otherness together is the last two or three seasons of "Dr. Who." And even there Amy Pond spent the entire first Matt Smith season leaving her regular old human boyfriend behind, like the (in this respect) somewhat analogous Rose before her, and traveling with the newly-regenerated Eleventh Doctor on her own--after first meeting him as an eight- or nine-year-old child and remaining fixated on him until he belatedly returned at least twelve or thirteen years later. In fact, the producers seemed to be deliberately creating considerable doubt about whether Amy would ever voluntarily return to her own time to marry Rory the next morning. But ultimately she did, and, after a few more hiccups (like Rory's getting killed, then resurrected as some sort of cyborg centurion and faithfully standing guard for several millennia in order to be reunited with her), the two of them have both wound up traveling with the Doctor fulltime pretty much ever since.