Jealousy

In my dream I'm walking around with one of my best friends at school, and she keeps talking about the guy we both fancy. She is closer to him in real life but closer still in my dream. She will just not stop talking about him, then he walks past and she starts saying how gorgeous he is. I suddenly stand up and punch her really hard in the face. I then take off my shoes and put them to one side. I then wonder around with no shoes on. I go into science and even thought I don't realise it I'm actually sitting next to my best friend that I punched. What does this mean? It's weird because I am jealous in reality.

Lauren