Help?

Ok I have this crush on one of my Друзья who is also a girl. I keep blushing when I am around her and I think about her maybe еще then I should DX (oh god I sound like a total creep) and I am just so shy and jumpy around her and my other Друзья are noticing this (I recently moved to a new school and I have new Друзья and my crush is one of them and none of them know im bi sexual) my other Друзья kept asking me about my crush and and I think they may know ,how can I tell them im bi или how can I hide it?