I Feel Some Type Of Way

I just can't get him off my mind. We were never together. We weren't friends, just associates. I've been having dreams about him everyday. It's so weird to me and it makes me feel un-comfortable . In these dreams i can tell that i care about him a lot,but its like we've known each-other for years and years. How do I get him off of my mind? I can't just forget him, because we go to the same school. I just don't get it