Screaming or howling

This dream has not only messed up my sleep but also left me scared knowing I could not understand how I knew this boy. So if you can, please help me. I had a dream that I was sitting down on a bench, inside what I thought was a hospital. Because I could see the check-in counter on the right of me and a doorway next to it on the left which was completely black inside. Everything had a light purple tint to it for some reason. And there must of been a window behind me because I could see the daylight shining on the check-in counter. But the line of light was going further down the counter with each passing second; I knew the sun was setting. My peripheral vision was limited to only what I could see in front of me. I knew I could not turn my head, but I did not want to either. I knew I had to keep my eyes on what was in front of me though like a feeling of instinct. And then to no surprise someone appeared in front of me. It was a boy around my age standing with his back facing me, looking at the blackened doorway. He had semi-long coal black hair and a dark blue t-shirt on, but again my vision was limited and I could not see below his waist. I knew I had been waiting for him - waiting for him to come for me. The details were not clear, just as every dream mostly is not. But I knew exactly what I was feeling and thinking - also knowing I was asleep. I knew that I had been waiting for him there, and he was choosing not to come to me but stay where it was he came from. And I knew something was wrong as I began to feel my heart drop into the pit of my stomach while staring at the back of his head. Either he was hurt or someone was trying to keep him there. He went of his own free will, but not for the right reasons. Feelings like that hit me over and over again until he began to walk away. That is when I finally let all those emotions out and began furiously crying. Crying and screaming so hard that I could feel my throat aching but yet I could not hear anything. I knew it was coming out and I knew he could hear it but I could not hear it myself. I wanted to follow him and go to where he was leading but my feet would not move. I had to just stand there and watch him walk away. I immediately woke up to feeling so sad that I could not help him. So I tried to lay back down to see if I could dream of him one more time but could not. After that night I began having no dreams at all and still cannot. Is it because I could not help him? I just do not understand. [Side-Note]: I do not know any other men in my life but my Brother, Father, and Uncles. I am a home-schooled student so there is not many males in my life except family. Because many told me it was either a crush of mine (which I do not have) or my brother. But my brother has brown hair and is not in any kind of trouble since he is also home-schooled. So who is he and why was I so scared to the point of tears that I could not help him even though I could not even see his face?