Why does this song do this to me?

Im a very musical person but not a very emotional one but lots of songs stir up emotions in me, really only clical music, a few examples are Mozart's Requeim M, Beethoven's 5th Symphony, and Beethoven's Moonlight Sonata. Well one piece has always spoke to me like none of these have, that piece is Chopin's Funeral March. I get very emotional when i hear this peice of music, i really cant explain why, i was kind of hoping that you people could help me. I also have a strange story, just not i listened to it and i started crying, i honestly can not remember the last time i cried, not even when my parents died, and i loved my parents, but then at the happier part i felt immediatly hot all over and goosebumps everywhere and my got really hard (yes i know that sounds gay as hell) can someone please explain what the hell is going on? thank you so much