Help!! Demented friend-girl coming after my soul!!

Hello to all! Hopefully if you're reading this I've gotten some of your attention and I thank you ahead for your time! I will start by telling you a little about myself and how this relationship has evolved. I am an 18 year old gay man and a senior in high school. My girl friend is also my age. We both met about a year and a half ago at a party and we were immediately drawn to each other (now I know for different reasons.) I wasn't physically attracted to her, of course, but rather drawn in by her energy. Different vibes, different vibes. At the time I wasn't totally sure I was gay but I guess I always knew...

We both got close. I liked her for her personality, I was a great friend, however she liked me romantically. I finally told her I was gay and she started to change. Becoming very dramatic around me and placing a lot of her burdens on me. She even began to talk about me behind my back. So I severed ties...

I was truly hurt by all of this because I treated her with utmost respect. I always went out of my way to help her and be as best of a friend I could. She was "appreciative" until I told her I was gay, making me feel used. I understand if she wants to punish me for not telling her but I really didn't know either. Also it's not like I wasn't a good friend during that time. If anything why wouldn't she give me more respect knowing I was truly there for her, not just trying to get in? Months passed and I was weak and brought her back into my life.

This time things were a bit different. She seemed to appreciate me more this time around. Now she seems to be trying to turn me into a flamboyant, feminine, gay man. Suggesting I help her shop, wear notoriously flamboyant clothes, listen to feminine music, watch chick flicks, and even wear makeup. This is TOTALLY not like me. I've never expressed much interest in these things and now all of the sudden she thinks these things are what I should associate with. I'm not sure if this is to give her some sort of closure for her love or she's just that ignorant, but it sure pisses me off. I don't want to feel like I have to change because I'm gay. I like my masculinity and I take pride in it. Don't get me wrong I do have a feminine side, lol, but it's more from an understanding of women, not necessarily my entire personality. I believe it is essential to embrace both masculine and feminine aspects of being human, but come on, don't try to make me something I'm not. Can anyone offer advice to understand why she is doing this to me?