I had a dream last night that really bothered me for some reason and I would like to know if there's any significant meaning behind it.

In my dream I went to a different school (I'm out of high school) where all of the teachers were overbearing and mean. They took me from my family and made me live in a very large house with large windows that lots of light filtered through and white walls and funiture and wooden floors. I had to go down some stairs to get to the living area and I was surprised to see the person that I have a crush on (let's call him "J") also living there. He kept me company and always liked to sit in a specific chair in the room.

I would go to school and tell people about my roomate but everyone would tell me that I lived alone and that there was no other person. I invited them to my house and even though J was sitting right in his regular spot, no on could see or hear him. One person almost sat on him. They went to the school counselor and told her that I was seeing things and she told me that I was suffering from a type of psychosis where I hallucinate. I went home and told J everything they told me and I remember him saying "But I'm not a hallucination or a ghost. I'm real."

I do however vaugely remembering a part of the dream where he gave me a partially-crushed cigarette (I don't smoke)and I put it in my hoodie pocket but it disappeared. In another part he walked through a door.

It sounds like you are feeling like you are being treated like you don't exist, or like your feelings and beliefs aren't important to you, in waking life.

This could have to do with self esteem issues.

Does that make sense to you at all?

Yes it does. I've been meaning to tell that person how I feel but I don't have the self-esteem or courage to do it.