Not entirely sure that my partner is NT, (she has her set of problems, but maybe I'm to blame for that), but she did tell me that her father was an alcoholic and that her mother had Alzheimer's. However, when we met, she asked for a one year moratorium on meeting her family.
My family, on the other hand, are easy to get along with and generally enjoyable company, nutty and delusional as they are. I've never felt the need, whether from embarrassment or shame to shield anyone from them.
One year went on for three more, and I didn't meet a single member of her family until our son was over a year old. None of them got along well with each other, and after her dad died, she cut off contact with one sister and her brother, along with their son's and daughters. Personally, I was always able to enjoy my time with them, but I can certainly get by without them, especially since the kids, (my son's cousins) were total brats and always left my son crying at some point.
I've often thought that had I met her family, particularly her sisters, I would have had a very keen view into the expectations my partner had for her life and our relationship, and I might have been able to see that I wasn't a good fit. While she often said that she didn't want a life like either of her sister's, I certainly have heard quite a lot of "why can't you be more like her husband?" She has given the usual layperson's diagnosis of her other sister's husband as being on the spectrum, but he's the good kind of Aspie ie. he has a good paying job and just lets his wife run the program.
My point is, family dynamics are just as vital as genetic predisposition in terms of relationship well being. At what point do we say that one person has disclosed enough? or does all the dirty laundry need to be aired? or only those from perfect families with spotless genetic profiles get to couple up and procreate?
My family history, as much as I know, is rife with mental instability(my dad), early death due to heart trouble (dad and grandfather), alcoholism(both grandfathers), and of course, Aspergers (mom, cousin, uncles, grandfather) along with a host of other issues completely unknown since my dad's family never had any contact and to this day are a complete mystery.
Point is, life is messy, relationships are messy, people have problems, some known, some unknown, some kept secret. The point isn't to ferret out all the problems before anyone hooks up, but to get to know and accept people where they are at, at that time and deal with the ups and downs, differences and troubles as they come.
Sorry, this has become a bit of a whiner/rant