The "friend zone" doesn't exist. It implies that women can't be just friends with a guy, and that they owe men sex. If you act like a friend, then you're going to be a friend. But if she doesn't want to sleep with you, then you have to respect her choice. It's not your choice, it's her. There are things you can do to show her you're interested, like the advice mentioned by other fapstronuats, but get out of this "friend-zoned" mindset. If she only wants to be your friend, stop whining and move on. There is much to be said about being assertive in the pursuit of a woman, but at a certain point that becomes creepy and even harassment. Women aren't here to "fuck you."