I'm a girl and i'm in love with my best friend who is also girl and have a boyfriend, help me please

i'm a girl and i'm bisexual and i'm in love with my best friend who is also girl and have a boyfriend. but from the first day of school( this year is my first year in this school) she asked me go out with her to buy some clothes when we didnt really much talk together and day by day we were closer and hug very tight and always sit next to each other and when she's sad or have pain in her boddy like period pain, she hug me too long until the break time ends, and every one else think maybe we are together because of this things( the way they look at us). .I am always there whenever she would need a shoulder to lean or cry on.We are so close.
but she always say that how much she like her bf and how sweet he is but in the other side she say to me ur stronger than him( because when she hold my hand and I carry her hand she thinks I can do it better than her bf) and also she says I have soft hands and skin like her bf and she always say things that i'm like her bf or better than him...
do you think she likes me too and do I have any chances to be with her?
and btw she sent me about things like masturbate or lesbian jokes...

She might like you and wait for you to speak about it as she can also like you as her best friend ... It depends on what do and act around you and around other girl , first you need to figure out if she has some interests into girls , I don't know like go see her Facebook profile or ask student about her and that stuff and second , try flirt with her and see her reaction like french kiss things like that ...
Invite her to your house for a night so you can be alone or other places !