In Love With My Bestfriend. Need Help.?

Okay, So I'm A Girl. And So Is My Best Friend. I Have A Crush On Her, A Huge One. I Don't Like Girls Except For In This Case I Like All Guys But Shes A Exception. I Like Her For Her Personality, And Everything She Is And What She Isn't. She's The Best Part Of My Day, And The Worst Because This Situation Is So Frusterating. She Knows I Like Her, And She Doesn't Mind But She Told Me She Doesn't Like Girls She Also Says I Do Everything Right And She Can't Lose Me As A Friend But She Doesn't Like Me In That Way. Before I Told Her She Used To Always Sit In My Lap Even When We Had Lots Of Space, And Play With My Fingers, Snuggle Up And Sleep On Me In A Couple Way, Hug Me And Just Go Out Of Her Way For Physical Contact In General. This Still Happens Just Not As Often But I Think Its Mostly Because We Are Not Together As Often Due To Schedual Conflicts. She Has A On Off Boyfriend Who Is Good Looking And Funny, But Doesn't Treat Her To Well. She Acts Different Around Him And Some Of Our Other Friends And Its Kinda Fake. She Acts Like They Are Best Friends, But I Know They Aren't Since I'm Her Best Friend And Everyone Pretty Much Knows That. Its Not Her. I Don't Like This Fake Her I Like The Real Her. I Love Her Even. I Would Like To Have A Somewhat Physical Relationship But Thats Not Really What I'm After. I Just Wish We Both Liked Each Other In The Way I Like Her. It Seems As If Shes Very Flirty To Me Specifically, And She Isnt Bothered That I Like Her Soo.. What Should I Do? Do You Think I Have A Chance? Whats Something Nice I Could Do For Her? What About The Whole Acting Different Around Different People? Help Me Please.