Am i gay or bisexual?

ever since i was little, ive always thought that i like boys. i would always talk about certain boys that i thought were cute with my friends. but deep down inside, i think ive always been more interested in girls. but at the time i didnt really know or pay attention 2 it. it wasnt until 6th grade last year when i really started 2 develop feelings for this 1 girl. i realized she had a bad attitude & i was quickly turned off by her. i thought that 1 little crush was just a phase & i would go back 2 "normal" then i started developing feelings 4 this other girl. my feelings towards her became stronger & stronger too the point where i felt like i was in love with her. thats when i really noticed that all this time, there's never really been any boy that i really liked like i thought i did. i just wasn't into boys. im not attracted 2 any boys like i am with girls. whenever im around my crush, i get tingly feelings, butterflies the 1st second i see her,& im always smiling & giggaling whenever i talk to her. there's something special about her that makes her different than any boy or girl ive been around.there are boys who i think r cute but i cant see myself going out or being happy with them in the future. i can see myself being happier with a girl. i just want 2 know am i deffinatley gay, is it a possibility, or can this just be a phase?