"No!" James cut Lily off. "If you can't work with him, you have to kill him. Otherwise, our entire world will tear itself apart. It's your choice, Harry. Know that your mother and I love you no matter what. Albus knows. He set you up. We never wanted you to live with Petunia and her walrus of a husband. Even Snape would have been a better choice of guardian. However, Albus started to play his little games. He manipulates those around him, forces them to do his bidding. He could have given Sirius a trial but didn't. He could have found another guardian for you but didn't. At this point, we are about 90% sure that he even knows about the Horcrux."