Demon talked to me in a dream

English is not my first language. The dream started with me doing homework, 9 good things about 9 demons from the goetia some of them were belzebub, and others. i started feeling real scared and a storm started like a real bad one, i went to my room to close the windows and my key was wet, went back and had a man in my dads room, young atractive black hair he was cleaning (until then i was completly alone) he say my moms key was close to fall in the sewer opening, i got it(the key has saint keychains) i thanked him and asked what could i do in returned, he looks intrigue like he didnt know where i was going, he said study (has a offering for him) i asked who is he he laughs and said our relationship starts now. Another man show up talking to him in a conversation he says for me to guess who the cleaning men was, and said he was a magician, "barbatos?" I asked and they both laughed.

then everything changed my friend was there and i tried talking about this dream to her, but a school test about geography and history started everytime i tried talking to her my teacher would show up, the test was hard for other people but i got until the "G" question easily, then at the Y (the questions was at the board) there wasnt any question just Y) y. Like the teacher had erased.

So any ideas who he was and what could have mean?