Yes, of course autistic adults can get married. There are no restrictions on autistic people getting married, as long as they can consent to being married there's no reason for them not to.
No - autism is a neurological condition, autistic children grow-up into autistic adults.
We can.
We don't.
Some adults might not be diagnosed as having autism until they are adults. Autism is generally believed to have a genetic component, which means a person is born with it. If a person has a mild case of autism or was misdiagnosed, it might not be correctly diagnosed until adulthood.
I don't know about that. But there are some children + adults with cerebral Palsy that are diagnosed with autism.
Your usually born with it and grow up to still have it. Basically it runs with you your whole life.
Autism is still called autism once a child reaches adulthood. Mild cases may be named something else, although closely related to autism, such as Aspergers. Some autistic patients are not diagnosed until they reach adulthood.
Yes, it is a developmental disability which cannot be cured. However, it can be treated with great success and many people with autism lead normal lives as adults.
Well, if you really love him/her the autism shouldn't affect your marriage it should only affect how they function.
Yes, it is very common for Autistic adults to have gone throughout their lives without knowing that they were Autistic. It was believed that Autism only occurred in boys, that a person was only Autistic if they behaved in a way common in those more severely impacted by Autism, and Autism was not widely known about a few decades ago...thus often people don't realize they're Autistic. Many adults do not realize that they're Autistic until their children are diagnosed and they start to learn more about Autism, thus recognize characteristics in themselves.
Yes, there are known situations of persons with autism having children with autism. There is a genetic component to autism. Some people with autism get married and have children. Some of those children have autism, but some do not. Autism varies in its severity, so other people might not recognize that a person has autism. Sometimes a parent with autism or Asperger's Syndrome is not diagnosed until after having a child with a more severe case that is diagnosed.
For the same reason so many adults have autism, also for the same reason so many children and adults are neurotypical - it's just how we're born. This question is like asking 'why are so many children black?'.