I had a dream my friend suicided, what does this mean?

I had a dream one night that my friend suicided, it was so realistic. When I woke up I was softly crying. I don’t remember much of it except that I was at school, my friend wasn’t there and my teacher had said, “It is sad when a best friend goes.” Or something like that. I was crying my hear out (in my dream) There were a few people I remember being there, those people being the following. My other friend, my crush, this other person I hate, that’s all I can remember.

I didn’t realise my friend had suicided in my dream till after my dream, what I want to know is what does all this mean? It was so realistic I sent an email to my friend asking them if they were okay, and if they were at all hurt. Please help me!