They don't, however, define "household." Do you have to share genetics? What if your family members live in other states? What about a roommate? Or if you're staying at a friend's house out of town?
You should also know that whenever you watch a movie, it'll show up on his account page. So, as long as you don't mind your ex getting a message like, "You recently watched yet another Kate Hudson movie," then you're probably fine. Meaning I'm sure he knows that you're using his password to watch a movie now and again.
A basic Netflix account costs $8 a month, so your crime carries the moral weight of about two muffins. It's about on par with not recycling an occasional peanut butter jar because that shit is so hard to clean!
Most people don't mind sharing their account info with a few close friends. As one of mine put it, "It's like offering a slice of the large pizza you just ordered or a beer from your 12-pack." If you're suffering a crisis of conscience, though, just ask your ex whether it's okay. Assuming you truly are on good terms, he'll probably be more than happy to let you watch Ryan Gosling take his shirt off once a month. That said, if he lets you, it also wouldn't hurt to buy him a beer or a burrito once in a while, in order to shift the karmic balance back in your favor. Otherwise, mildly terrible things might happen. You might get hiccups for an hour, or run out of quarters on laundry day. And you'll have only yourself to blame.
PS: This doesn't really have to do with your question, but Netflix-related quandaries always make me think about the guy who rigged his ">ex-girlfriend's account so that the only films recommended to her were ones involving betrayal. Isn't that the nerdiest revenge ever?Follow us on Twitter: @annapulley and @ExhibitionistSF or Facebook