Thanks everyone. I really appreciate the support. My family was really happy that I decided to break it off with him, for me, as I'm sure they probably should be - but I can't even think about bringing up a conversation like this with them for fear that they will flip out thinking it automatically means I'm taking him back...
I guess the thing is, that I don't want to lead him on or make him think that I am not serious. But as I said, he did not seem to respond that way at all.
I guess we'll see what happens.