Girls Opinion, How would you like a boy to ask you out, like being your bf?

I wanna ask her out but i dont know how. Were both still in m.s. so rlly when people ask out each other it means them being a couple not literally going out to the mall or movies you know. I rlly think she likes me becuz her freinds have told me and i knw she knows i lke her. Just tell me a causll way to ask her out one that she'd say yes too.