What does this dream mean?

I dreamt that I enrolled in a college or university and on my first day I got lost, I went to the bathroom, and there I saw this girl talking to her friend and I decided to ask her for help. At first I was very scared to talk to her because she looked very mean but she decided to help me. The next day I saw her in the bathroom and She aproached me and started having a conversation with me and I found this very weird because with her friends she seemed to talk very disrespectfully but with me she talked very fancy and formal. After this we started to hang out a lot and one day I told her I was beginning to have problems with some bullies and with some teachers. She told me she was going to protect me from them and led me to some secret places where I could hide from them. She showed me a tiny secret room in the bathroom, a secret passage in our school movie theater (Yes, I dreamt that the campus had a huge movie theater), and some others that I can't remember. For the next few days I would hide in these and sometimes my new friend would come to hang out with me. One day however she stopped hanging out with me and I wondered why. I checked my text messages and I read a message she sent me where she said that she was lesbian and she had a crush on me. I texted her back saying I was sorry but that I was straight and I could only see her as a friend. She didnt get mad but she did become very sad and isolated and after this I didn't see her as often as before. Later I woke up.