I'm confused about my sexuality....?

i'm a teenage girl and i don't know whether i am straight or bisexual. I have liked boys my whole life, but now that i'm a high schooler i dont think i would be against kissing a girl. i fell like i might be too scared to date a girl, and idk if my feelings towards women are as strong as mine towards men. however, i have in the past looked at massage vids and such of women not men. the idea of trying things with a woman sounds kind of good to me, but i also want a boyfriend and ahhh i just don't know what to feel. a lot of my really good friends are religious and conservative and i feel like if i am bi actuallly, they will not treat me the same. they have said things about not wanting to marry a bisexual man because they think its gross, and i don't. also, sometimes my non conservative friends and i indirectly do things like feel each other but not much. sometimes if one of them holds my hand i wonder what it would be like to be with a girl. but i also love being with boys. i'm sorry if this is very confusing to read,but i honestly feel very lost myself. i've read a lot of ppl saying "don't label yourself" and i don't want to come out or anything just yet, i just want to know for myself at least. so how do i find out?? i like boys touching me, but the thought of girls touching me pleases me as well... i think i sound bisexual, but i dont want to jump to conclusions. any advice?? thanks everyone.