It's just my opinion, but I disagree. If someone is socially high functioning enough to find a mate, that is no longer autism. We can't keep widening the "spectrum" to include anyone with mild trouble socializing.
IMO I'd read a bit more up on the autistic spectrum. Further, I'd really recommend you never armchair diagnose anybody because that's extremely harmful. A lot of us have been told "we aren't autistic" or "that doesn't look like autism" and that specifically can cause tons of consternation for people like myself and OP as we try to figure out our way through life.