What do you think? Am I gay, or what?

Sorry, it ended up longer than I thought it would be. Hi, my name is Stella, and I'm 14. This girl at my school is one year older than me, but she was held back a year because she flunked math last year. She's in my class this year, and it seems she likes me. She's always looking and smiling at me during class, in the cafeteria, and at any other times we're around each other. One day when we met in the hall, she came up to me and asked me out. I'm pretty shy and I got nervous and told her I'm into guys. She said it didn't have to be like a date, we could just hang out as friends. I said okay, so she said great and told me where and when to meet her. I told my family I was going to hang out with a friend for awhile. They were shocked, because I usually stay home after school. After we met up at the mall with some of her other friends, I got nervous again, because I never spent time alone with strangers at the mall before. Some of them were shopping, others just looking around, and one of the people there was a really perverted guy. He looked about 17 or 18, and he was the boyfriend of one of the girls. I think he flirted with me, because he was talking to me really friendly and his girlfriend got mad at him. Once we split up and went to different parts of the mall, the girl from my class, Lily, and I were left alone together. She apologized for the pervy guy, and I said it was no problem. We talked about random things like school, home, and hobbies. I told her I never went out with friends before, and I've also never been on a date, had a boyfriend, or gotten my first kiss. Then she asked if she could kiss me, I was shocked, so I started babbling on about how we just started talking and we don't know each other that well. She put her hand on my shoulder, and said she wouldn't ask me about again if I let her do it now. I agreed and closed my eyes tightly. But when I felt her put her other hand behind my head and kiss me, I loosened up. It was so amazing, I just got lost in the moment for awhile and I felt like I was melting. Then I quickly opened my eyes and pulled away from her. She said I was sorry, and we left to find the others. I fell behind a bit and thought to myself about what had happened. Once we all went home, I locked myself in my room and thought about it some more. I knew I enjoyed it so much. I like guys, I think. I mean, I'm attracted to them, and I think they're cute and all. But I really never even thought of dating. But this was different than anything I've ever felt before. After she kissed me, I started thinking about her all the time, and I want to see her again. Now, whenever I see her at school, I get the urge to kiss her again. The other night, I dreamed about us making out without any clothes on, and we "did it". I can't stop think about her, no matter what I do. She's really pretty, in fact, I'd go as far as to say she's beautiful. But before all of this, I was never attracted to her. Certainly not like this, anyway. Now I just want her to take me in her arms, tilt me back, and kiss me even more passionately than she did before, like in the movies. Um... This might be a weird question but... I'm not gay, am I? Could this just be some kind of hormonal thing, or because it was my first kiss? Should I ask her to kiss me again? To find out, I mean! Because I really kind of want her to...