Am i bi-ual or bi-curious?

ok im a 19yr old female. n ever sence i can remember ive loved n often experimented with my girl friends at a very young age. last yr i told sum friends that i liked girls n sum where like "eww do u kno how many times i changed infront of her!?" - which really p'd me off. n other we acceptting. my Q is, am i bi? i mean just b/c i fantazie about girls does that mean im bi? i have done alot with girls but i cant see myself in a relationship with one. idk im confused. like i often search for other bi/lez girls but when it comes time to meeting them i chicken out? is it b/c im scared to fully come out? idkk...wat do u think?