Well you'll never know until you talk to them about it. Maybe they went to the other guy simply because it seemed as if you were showing no interest.
You don't know the girls I know.
Believe me.
So, there are these two guys after this one girl (well actually, about 10 guys are after her, but anyway) and sometimes they literally get in a tug-of-war with her.
I think she kinda "uses" people, though... she does one thing to someone and they think "OMGOMFG SHE TOUCHED MY HEAD OLOLOL SHE WANTS ME"