This, too, will pass. You might try surfing the web for interesting prompts. That sometimes works for me. Or go on a movie-watching binge, and take a character from one movie, a setting from another, etc. and try brainstorming a tale with your significant other out loud. Make it really silly. Like: Okay, Beauty doesn't go to a castle, she gets wrapped up in a heist, like with Oceans11. The she finds out people are trying to kill her, like in Red. That sort of thing. For some reason, being completely ridiculous helps me.
Or there's always chocolate therapy.
*sets out plate with fudge, brownies, Rollos, Hershey bars--no redeeming nutritional value whatsoever*
*tosses in chocolate fondue pot for no good reason*