Best friends don't tell lies . . . But Jill does. Jill didn't used to be like that. Jill used to be a sweet, terrific person to know. Once, I even considered her the best friend that I'd ever had. But that's all changed now. There's something really wrong with Jill. She gets terrible headaches and yells at everyone. When she's not angry, she sulks and refused to talk--even to me. It really hurts to see Jill act like this. But the absolute worst is her lying. It's like she doesn't care about anyone--not even herself. I don't know how much more I can take. Best friends aren't supposed to give up on each other. And I don't want to. But what else can I do?