I (18M) I have a friend who is 21. She was in my school parking lot because she came to see her friends who had study hall for last period so they could just leave school early. I had stayed for a club that ended at 3:45. I walk out and I see her and she runs up and hugs me which was normal at that time since we’d pretty much grown up together since I was 12 and she was 15. Anyway I hanged out with her and her friends for a little bit but told her I needed to get home (I live about 15 minutes away from school) and she insisted she’d accompany me. I thought it was a bit odd but still felt safe because we were friends. About 5 minutes in to us walking to my house she tells me to hug her (walking side by side so I’d put my arm around her) so I do and she grabs my arm so that I don’t pull away. She then slides my hand down to her ass and tells me to slap it. I’m 18 so I’m at the peak of my horniness lol so of course I do. I was filled with adrenaline so I didn’t even realize that we were about to get to my house so then I pull away. I can see from the corner of my eye she looks at me as soon as I do that she then grabs my arm and slides it to her pussy. We’re walking in a neighborhood so I’m very surprised she isn’t trying to be sneaky about it. I on the other hand am very scared that people will see so I didn’t get to rub/touch her for a long time. Now we’re pretty much at the parking lot of my apartment and I tell her: