I wana b friend wid benefits wid a girl that ive been frans wid 4 bout a Yr, how do i tell her&wat do i say?

Just ask her out.... She might say no... If shr does then ask her again in a week... She will probly say yes then if not then keep doin it evry week shell start 2 like u not only as a friend trust me she will adventually she will say yes