After spending the evening in the local pub, a man returns home to his apartment in one of those buildings where every floor is pretty much the same  He is really having a hard time with his key when he discovers the front door is unlocked.  So he goes in, but he doesn’t turn on the lights, because he doesn’t want to disturb his wife.  He just gets undressed in the dark and gets into bed next to her.  Only she’s not asleep.  And she’s not wearing anything, either.  She’d apparently been waiting all evening for him to come home, which was something she hadn’t done in years.  They made love for over an hour there in the dark, not saying a word.  And the sex was fantastic, too.  Better than maybe it had ever been. 

Finally, the guy stumbles into the bathroom.  For the first time, he finally turns on the light.  And it is only then that he realize that this is not his bathroom.  This is not his apartment.  And he has no idea who the woman is that is waiting for him to come back to bed.

But what is he to do?  There’s no little window that he can squeeze out of.  The light’s now on in the bedroom – he can see it underneath the door – so there’s no sneaking out in the dark.  And he can’t really stay in the bathroom until she falls asleep, assuming she ever will.  After all, whoever she was expecting, whoever she thought was already there, could walk through the door at any second.  And this was definitely not something his wife would call an honest mistake should she ever find out.  But there was nothing to do.  So he opened the door.  And there, sitting on a bed that was clearly not his, still naked, was his wife.