Girls i really need your help!!!why cant i just tell her?

i have a hugh crush on this girl from school thats biual and so am i :-) we had the most amaizing chat on msn earler in the summer wen i told her i was bi but i knew she was bi.im kinda new at this whole thing and she knows all about it ;D.i told her on formspring that shes all i ever think about, that i really like her and i really care about her.......like alot.But i hated being a chicken behind a computer screen :L so i told her i was from school and that i wud tell her on our first day back (26th of augest) so i want to tell her that it was me but i dno how to approach it so how do i start it off and hopefully lead to a kiss maybe making out <33333 :3