I am a teen currently and want people to be comfortable with knowing I'm autistic, first of all. Or else I feel like they don't really know me, and we aren't really friends.
To understand that I'm not going to be texting them 50 times a day, posting on their wall on Facebook 20 more times, and otherwise chatting with them all the time. I take people in spurts, even those that I am fond of. If they truly care about me, they'll check up on me every so often and we'll make plans or talk for a bit.
I don't drink, smoke, do drugs, or have sex. I have anxiety about driving, and they will wear seatbelts and we won't go over the speed limit if I'm driving. I am not "boring" and I refuse to be made fun of ridiculed for these things. They threaten my feelings of safety if they try to force these things on me. Expect a swift cutting off of our friendship and a deep scar in our relationship. On the other hand, if they respect these things, I will be loyal to them forever. They can count on me no matter what.
Above all, I want girls to get rid of that God-awful "silent treatment." You know, where you do something and they decide to just stop talking to you, stop acknowledging your existence, don't tell you what you did wrong, won't let you fix it...? I am made worse than the enemy. I am an un-person, not worthy of notice. It makes me cry just remembering it. NT people, I have empathy, and I have feelings, and I can't describe the pain that results from the "silent treatment."