Nightmare that felt kinda real?

Hey all, just woke up from nightmare. The scenario was i was in a house, in a beautiful bathroom with a classmate i barely know. I guess we were roommates. I had a crush on her brother, and they don't get a long very much. For some reason when i tried to hold the door and lock it in place trying to not let him in because he's not suppose to, he barges in. "Justin why you have to come into the bathroom? Especially half naked." Said my classmate getting mad. Then i randomly ask "Can i touch your abs" He literally ignored me, and my classmate had a scissor that looked sharp but the scissor was small. And she just runs up, and cuts open his chest and i see like an avulsion of blood coming out. I hear my roommate laughing like a psycho path. Next thing i know she's trying to kill herself. I dont watch any horror films. I just thought this meant something but maybe it is just a dream