The Joker said "we'll how loyal a hungry dog really is". This is mostly true. However, german shepherds are very well known to only accept food from people they trust.
It's also what makes them so difficult to adopt into a new home. They may take weeks to trust new masters, which may lead to dehydration and starvation.
The point I'm trying to make is: if you want true love and loyalty, don't get a woman - get a german shepherd.
@WhisherWintersong my dogs don't enter my living quarters as well, but I have a small farm house, where the living quarters are on a raised floor, so the dog always has access to the grounds and lower floor. I have books, paintings, curtains, nice furniture and a bunch of musical instruments. My dog would completely tear the shit apart.