My currect crush is my best friend, I really want to be with her but we are seriosly like brothers. we hang out a lot both of us alone but there is nothing happening and no sexuall tension.
I really need help guys because I go crazy from her. Is there anything I can do to change our realtions?

Start being more playful and touchy/feely and escalate to a sexual level. Learn to calibrate and respond accordingly to her reactions.

I had the same thing before and she was the reason I got into this. After almost 5 years... I realized she was NOTHING like what I wanted in a woman. Get out there and start talking to other girls. Find out what you want and what is out there before you decide that she is your main target. Now, I would never consider dating the girl who I once called my best friend. We are still like brother and sister... I still care about her as a person... But again, I want more than what she is and now, she wants nothing more than to be with me. She does not meet my expectations so that will not happen. You will be surprised what you will learn about yourself by understanding and practicing pick up.