Well my friend, there is only one way to know if a girl likes you. Here is what you have to do. Put some toast in an envelope with her name on it and give said envelope to her. Then wait for up to two days. If she gives you an envelope back..., do not open it until you get home. Get home, open it and there should be nude pics of her inside. The next day talk to her alone after or before school. Then you have to say a secret code, is the peanut butter in the potato? If she answers, No it is in the apple sauce, then she likes you. If she kicks you in the balls and runs away, then it is safe to say she is not interested. Hope that helps [spoiler]sources: http://halo.bungie.net/forums/posts.aspx?postID=50785776[/spoiler]

An incredibly successful and completely legitimate way to ensure a Female is attracted to you. The first step is relatively easy. Put a two slices of Toast in an envelope with the female's name on it. Step two requires patience; requiring a 48 hour period of zero contact until the female gives back the envelope. Do not open the envelope again until you're in a secure environment. If step two was performed successfully, the envelope should now contain nude pics of your target. Step three requires speaking to her alone using a secret code: If you ask: "Is the peanut butter in the potato?" and she answers with: "No it is in the apple sauce.", then the Toast/Envelope Method was performed successfully and you can continue your courtship on your own terms.  Alternatively, if you are kicked in the testicles upon uttering the code, it is safe to say she is not interested.