my advice, stay her best friend. have that as #1 priority.
if ur best friends for life then thats awesome, coz most relationships just come and go but friendships can last thru pretty much anything.
but IF u 2 do end up together somewhere along the line, then thats jsut as awesome. but just dont go looking for a relationship now or any time soon..
if u ARE soulmates and meant to be together im sure things will fall into place, they usually do.
just dont go 'looking' for that relationship with her..
and most of all: dont force stuff.
like i said, if its meant to happen, itll happen!