Does the underdog in a love triangle win?

i would personally say she is using you and the other guy to get attention and what's she wants. what i would say to you is don't pay her no attention act like you don't care but don't. don't compete with the other guy cuz all he is doing buyin her things and using pick up lines. all you have to do is chill act like it don't bother you and you, don't buy her nothing but still talke to her. and i bet she will want you more. trust me i been there done that