Am I a lesbian or a bisexual?

Well I'm 16 in high school, I've had boyfriends and a girlfriend,
But every boyfriend I have had I stop liking them after about 4 days of going out? And I'm defiantly not sexually attracted to them, it like the day we go out it's really exciting but then it kinda wears off.
With girls I don't get that "I don't love you anymore feeling" , I am sexually and emotionally attracted to girls, but I sometimes still think about dating guys cause gay girls are so hard to find,
If I had to pick a gender I would defiantly pick female,
Am I a lesbian? Please help I'm confused an need an answer o.o

sounds like you might be lesbian but it could also be that you might not have found the right person (be it male or female)

did you kiss her , if you kiss her and just like the girls you are lesbian like me