When I encounter a crush of mine, I usually punch a hole in it and devour its insides. After that, sometimes I'll stomp the empty shell just for funsies, dispose of it, then never think about it again. Until I want to buy another soda...
But yeah, annoying how that happens, but that's how it goes. Sometimes you have to learn the hard way that we can't count on other people to respect our feelings, regardless of how hard we try to respect theirs. Being a good person doesn't mean that people will be good to you in turn. We can't make other people do anything; the best we can do is choose to walk away. Good for you.
Reminder to never, never, tell her how you feel, before you have connected mentally and physically. Otherwise it's doomed from the beginning onwards.
They should add that lesson to the grade-school curriculum somewhere between algebra and geometry