i have pretty much the same idea as >>18 does. the only difference is "find another target" part.
i guess it will very difficult to think of find another target at this stage, because u r so sure of ur feeling towards her. and if u could feel like finding new ones so easily, u wouldnt have worried so much.
so, i suggest that u spend time with her in a way she doesnt get annoyed. u just enjoy beeing with her. and at the same, u open ur eyes very wide to take a look at other girls. u might be able to find a better one who also likes u very much.
im sure that one day u will be able to find a very nice one, and when u find it, u can fart on sarcastic "fart man" and say hahaha. im waiting for that day:-)
i wish u a good luck.