Hi, Nicole.
My nephew, who is now 35, has Asperger's Syndrome. He is a math genius and did well in his studies once he realized how important getting good grades would be. He is happily married and working.
If I could use only one word to describe him, it would be concrete. Right and wrong are the biggest concepts in his life, and I mean right and wrong in the broadest sense, moral, temporal, physical, etc. There are no shades of gray in his life. That's why he was drawn to math--it's right or it's wrong. He understands the concept of funny, but it can take him years to "get" a joke. Routine is important because it comes under "the right time" to do things, "the right route" to walk to school.
It was tough for him growing up with 2 brothers who are clowns. They did tease him a lot, but he learned how to deal with his differences. School was fine but boring. He needed to be challenged more than the rest of his class, so he was allowed to do special projects so he wouldn't race ahead. He's still trying to find his professional niche, but he enjoys working. His life is good.
All this to say that if your son has Asperger's, his life can still be full of love and fulfillment. Hugs,
Chris