This isn't new. Gals have sent their men off to war satisfied since the beginning of time.
There's a surprising amount of tut-tut disapproval on the thread.
The term mercy jump got a big boost in the film Jersey Girls. I'm sure a lot of these Take One for The Country girls, if they exist, picture themselves as playing Liv Tyler to Ben Affleck (who, by the way, is great in the film.)