How can I make myself feel better because of what someone has done to me at my high school's bathroom ?

I'm totally confused about my uality right now because of what someone did to me in the bathroom back in high school. I'm currently 19 years old and I'm single and I think I'm straight orientated but I think the person whoever did something to me in the bathroom might have messed up and confused my uality. You see, Back when i was in my junior year of high school people were spreading untrue that i was gay, they've done that back in elementary school but it was a lot worse in high school. When all of the girls heard that they ran far away from me even though it is untrue, my friends kept saying gay jokes to me after then. But the worst part was my senior year, I was stalked by a gay guy named Tray he was completly being insulting and nasty me he kept on saying he is going to take whatever he was holding in his hands whether it is an Soda can or an Pencil and shove it up my . I tried to ignore him so he targeted me in the bathroom near the gym where not a lot of people use it. I was in an emergency to use the bathroom so i had to use it and after about 30 seconds i went into the bathroom he went and locked the bathroom door and then molested me orally by force, he also done something nasty in my mouth. It was Valentine's Day when that happened and I was about to go give flowers to one of my friend that is a girl but i instead ran home. I was in shock and fear and developed Migraine headaches and was home bound for 3 months which means a teacher went to my house and taught me. I went back to school psychically in April 2009 and I was kept on hared by that gay guy until graduation but he never did anything else after that Valentine's Day incident. After a week after my high school graduation I started cross dressing in girl's clothing and heels, the gay guy's quote that is, you're gay and that's why no girls likes you so you should become a girl, that voice kept on haunting me till today. The crossdressing escalated so much that I own 3 pairs of heels now and I kept on wanting to get more. I think he really messed me up. I'm confused about my uality now, I know for the fact that I'm only interested in girls and I'm never attracted to guys but I'm really confused. What could I do to feel better because of what that guy has done to me ??? Would the cross dressing stop or is that a permanent thing ??? Also, was it because of him that's why I started cross dressing ? Can anyone please help me out ??? I'm really confused about my uality and scared for my life. I'm attending college this upcoming summer or Fall.