I wasn't even leading him on prior to this. He had no reason to think I was attracted to him. He doesn't know who I am in the slightest. It crossed a line for me, so I was highly offended.
But yes, I was being passive. I was kind of paralyzed.
I was even trying to give him hints to stay away from me before he actually full on started putting his hands on me.
EDIT: I didn't even mention how, at this party, my roommate and I were approached by two other guys when our 'friends' weren't with us. we were standing by the wall and before they came up to us I heard one of them say "which one do you want?"
the one proceeded to grind on my friend, and the other had his face uncomfortably close to mine. they started getting aggressive when I said to leave us alone, but I stood my ground and they finally left. They were drunk off their asses.
I definitely let them know I wasn't interested, and I definitely wasn't flattered.
I do know that situation was a little different, but everyone could tell i was highly disturbed by it and this kid STILL touched me. I was in a horrendous mood.