(And, YES, Michael, I've read and loved Sue S.'s story with that theme, but not entitled that but its title always slips away from me)
Are you talking about 'Revisionist History'? Lois and Clark take a couple midnight swims in that one.
You did miss another title, btw. 'Return to Sender.' It's the title of the sequel to 'Now or Never' (which also isn't on the list <g>). It's about 3/4 complete (though it is fully outlined). I'm hoping that I might be able to finish it before the end of the year.