What should i do? can i ask her out now or hev to meet her fest?

i hev bn tokn to this gal my frend introduced me to. its abt a wik now, we hev neva met. but the strange thing is i am starting to like her its like shz getting ova my hed now and i dont noe if i shud ask her out now,or i hev to wait till i meet her. we are good on the 4n i min rilly gud.