I also became moar socially aware and adept starting at age 14. I made friends for the first time around that time. High school was a good eggsperience for me. I did well in school, and I had a few friends, with whom I hung out at school and occasionally outside of school, and I was satisfied with the amount of socialization and inclusion that I had.
I don't think that social functioning necessarily deteriorates during adolescence for autistic kids. Prior to adolescence, I was so asocial, and my social functioning was so low, that there was only one direction for me to go, as I developed moar social knowledge and theory of mind from reading books and watching TV. I didn't really understand the concept of socialization before a certain age, around 13, just like I didn't really understand the concept of communication before another certain age, around 9. I don't fit the profile of the autistic child having some level of social functioning during childhood, then falling behind her NT peers and becoming increasingly isolated during adolescence. For me, it was moar like not having any social functioning during childhood, then developing some for the first time during adolescence. Age 14 was when I had enough social knowledge and awareness to socialize and develop friendships for the first time.
My initial making of friends followed a very autistic pattern. In 8th grade, my family moved to California, and I went to a new school. On my first day, the school paired me up with a buddy to show me around, and this included going to eat lunch with the buddy's group of friends. From then on, I ate lunch with this group eberryday, until the end of junior high. Then, during the summer, I had no communications with any of them, and I didn't think about them at all. Then, on the first day of high school, I see one of them, and they come up to me and ask me where I want to eat lunch. So we decide to eat lunch at a certain place, and I go there at lunch time, and the same group is there. From then on, we ate lunch there eberryday, and after a few months, I realized that I had friends.