Quite possibly a mild case of AS. I was socially awkward as a kid, most of my friends in high school were IM/online friends, and I didn't have a serious girlfriend until after college. I'm "class of 23" although that could have been earlier if I were an unscrupulous person.

I had a social growth spurt recently (girlfriend dumped me, health problems went away, much better job, developed the will to learn social skills previously neglected) which has been wonderful, but also a huge spiritual challenge for reasons that are too personal to get into.