You will neva here me complaine about spellink or tie-pos! I think part of my reason for existing is to be a thorn in the side of English Majors.
Well that is on target as far as what my partner does for me. As an aspie I find the natural tendency is usually inward as in shutting things out to avoid stresses, and worry/anxiety is maybe the most common co-morbid that comes with HFA. Conversely, my strengths tend to be in areas she is weak in. One thing I try to do is not be lazy and step up to the plate any time she needs as assist. Then she is more naturally inclined to help me when my aspie side emerges and causes some issues.
We both had a similar situation to you, in that we had a HFA in each of our families. They were both more severe cases however and it took a while to realize that I had it too. Up to then it was attributed to a 'different' type of personality, which my partner liked in the beginning. It wasn't so great however as certain traits got more noticable, and anxiety became slowly worse. Some elements of our fix were 1) realizing what we were dealing with and its symptoms and 2) me seeing shrinks and getting on a med for anxiety. It took a while to find the right med, but once I did, life became much easier. It was a great relief to have the continual worrying reduced greatly. Meds aren't for everyone, just an option.
Black labs are great dogs btw. The first dog I got really close to was one (my brothers). I always thought that would be the one I would get... although they are usually very active puppies.
But it finally came time to get a dog I decided they were not quite macho and BA enough for me and so settled on Chihuahuas and Chi mixes.
Actually my wife came home with the first by surprise around Christmas one year.
On sharing the news. I don't usually advocate telling anyone except those closest to you (ie partner/immediate family) unless you need to for a disability issue. I say that because too many people have a negative view/stereotype in mind about autism and labels in general aren't a positive thing. But with a partner yes, definately, at some point. Your approach now is best in that it always seems best if they bring it up and have done some pre-processing. If it turns out you need to be the one to address it, just have patience and allow for an initial confused reaction on their part. Since your connection is strong however, they will eventually see it changes nothing, and only will decrease misunderstandings in the future.