Siblings of autistics can be so sweet sometimes.
I have a brother, eight years younger, and he's so nice to me. He was my best friend through a lot of the times when I had no friends, and always happy to include me in activities with his friends even though I'm so much older. And it looks like he'll be a support to me as an adult, too. We're thinking of being roommates when he's ready to move out of home.