I have twins with one diagnosed back in the day with PDD-NOS. He is now in college and doing well with As/Bs in an "easier" major. He is a rule follower and will likely find employment but not earn a lot of money. We expect that he will need to find a living situation with roommates to afford rent in this area. Luckily, college is helping him prepare to live with all sorts of different personalities. He has never dated, and I doubt he will ever have a relationship. That makes me very sad, but I'm not sure it will make him sad (initially, at least).
We did extensive PT, OT, and ST when he was a kid... from age 3 to age 10. He was in the non-cat Child Find preschool through FCPS. We also put him in a typical afternoon (church) preschool with a shadow. We felt that mix was very beneficial, and he was mainstreamed and took a mix of regular and Honors courses (plus a few APs). We also put him in lots and lots amd lots of sports. That helped him be able to fit in better with the other boys.
My grief and stress ebbs and flows. Have date nights and hobbies to help take your mind off of things.