im 15 and I love this girl in my school we talk but not like I want to but anyways in my dream i was sitting at the lunch table we all sit at except one of my friends but hes one of my best friends and he was sitting with her hold her hand and I kept looking at him and her and I was so jealous then I started burning up and I got up and was going to the bathroom at school but then I woke up ps she never dates no one

Dreams are symbolic reflections of your feelings about your waking life at the time you had them. You felt "cheated on" in your dream, so you might start with understanding what that symbol means in dreams. Here's a link to the definition on this website:

cheated on: dreamdoctor.com/component/dreams/?contro...&task=details&id=438

The other key symbol in your dream is "bathroom". Here's a link to the definition of that symbol:

bathroom: dreamdoctor.com/component/dreams/?contro...&task=details&id=161

You felt ashamed (bathroom) of your feelings of jealousy which explains why you retreated to the bathroom in your dream, especially since you know that this girl isn't dating anyone. I realize that it was a while ago since you had the dream, but try to think back to when you had it. She may have laughed at one of his jokes or given him a look that made you feel jealous and it popped up in your dreams.

The meaning of this dream is that this girl is capable of making you feel jealous. Jealousy is a green-eyed monster. Nothing good comes of it... making this somewhat of a warning dream for you.

Hope that helps.