When flying on a plane back to New York I ended up sitting next to a man who had the wrong idea about me. He started out by complimenting me but the moment I lay down to sleep he started kissing me and feeling my breasts and ass sexually without my consent. This happened the day after I turned 18 and he made two very obvious attempts to engage me in something I wasn't into and didn't want. When I returned to my seat after a while the guy noticed that I was pissed and began talking to me about his reasons, one of which was that he asked for consent and that I gave it to him. I don't remember his asking or my consent partly because I was in a state of half asleep and listening to my ipod on maximum volume. The two of us had four seats to ourselves which I used to push him away from me after the fact, however throughout the rest of the flight and the last few days I have had a nagging feeling in the back of my head that I somehow told him it was okay even though it felt completely wrong and one sided.