This story is pretty funny. It read a bit like an IM conversation or something though, dialogue should be in quotation marks. Actions during/following dialogue work much better and add a lot more life to the story. For example, [Brittany: (Gasps) that's so not true! Get a life!] could be much more powerful with a little more description and the right formatting. IE: [Brittany looked upset, "That's so not true!' she gasped as she clenched her fists in anger, "Get a life!"]

More description about where this is taking place and what they are doing would really add a lot to your story because at the moment, it seems like a conversation without any context.

A few minor changes would really make this story look more professional. Good luck with your next chapter!