Okay, so i mentioned in another thread that my cousin is staying with us. So in the time that she has stayed with us:
Her room has become a pigsty (it is actually my mothers room, and when Cousin came to stay, mom made sure the room was clean.)
She has come home late at least three nights a week, if not more.
Last night she stayed out all night, even though she said she'd get home when I did, so as not to make the dog freak out twice. (I had been at a Swing Dance Prom and got home around three thirty.) On top of this, after she went to work, she came home after a few hours. When I asked her why, she said she "felt sick" 
On top of all this, Cousin is one person, but makes enough mess for two. She is to put it plainly, a pig. And she doesn't know how to clean. Not won't clean, but doesn't know how to.
Just thought I'd update y'all. She is gone! She apparently found a place with friends, and left last night. YAY!
The aunt who stayed with us for several weeks for a summer internship back in the 1980s did the same thing - moved in with a coworker who lived a LOT closer to the place where her internship was. Frankly, it was a relief.
Looking back later, she had been staying with a string of friends during the time she was breaking up with her first husband (who ended up being her late husband instead of her divorced husband due to lack of money to go through with the divorce in court) - and three out of four of those families ended up getting a divorce, too.
I won't say that my aunt was the cause - but I do wonder if she was the last straw that "broke the camel's back" (or two last straws - as she had their DD with her) in marriages that were having a few problems before she moved in with them. Because she had this habit of pointing out anything that the other partner was doing that could be irritating and making it much worse of an irritation that it really had to be.
