Um... Instead of just ENDING YOUR FRIENDSHIP how about you just use common sense and confront him with it? Don't assume stuff like this. It's this kind of crap that makes people regret their actions. Don't make it harder than it has to be.
In all honestly, he probably either just thought you weren't interested or had been rejected or something. Moral of the story? Don't sleep on stuff you want to achieve if it has to be done in a timely manner.