Is it normal to have a dream of kissing your enemy??

I am a girl. I like boys. For me, sometimes, I often stare at girls, but when I think about my actions more in depth, I don't have that same ATTRACTION and SEXUAL DESIRE that I do when I see a boy that is attractive, so I do think that I am not a lesbian.

There is this girl that I know who is sort of the ring leader of a string of asshole bitches in my school, who I know because we were all on the same cheerleading squad and I was actually pretty neutral with them until they began randomly being assholes to me and some other girls, and for some reason I had a dream recently of this:

I was sitting in my chair in school, and she was sitting behind me. She started knocking her foot against my chair, tipping the chair over sideways.

I turned around and told her stop, saying something around, "What the fuck is your problem? Stop fucking around, goddam, I'm not in the mood." To which she replied, "No," and she kept doing it. On her face was this one of evil content and keenness.

Then the seats changed, and we were in desks facing each other. I know words were exchanged, but I can't remember exactly. Our faces were really close. Then she kissed me! And i remember her lips were really soft. People in class started whooping.

I stood up, my hand on her desk, looking down at her. Then I looked around the class, and sat back down, more closer to her face. My feelings of animosity were gone I think, and I think I could feel we were both interested in each other.

"So you're a lesbian?" I asked inquiringly. She shrugged, smiling and smacking her gum, her eyes watching me with expression with lustful, evil content...

It gets faded after there. So what does this mean? Why did I dream this? Is this normal?