I Have A 16 Year Old Sister And We Are Constantly Arguing. We Say We Hate Each Other With A Straight Face And Think Nothing Of It. Well I Recently Watch The Movie My Sisters Keeper. It Taught Me That Its Not That We Fight, Its That We Make Up. We Havent Argued Or Laid A Hand On Each Other Since. Yeah, We Get On Each Others Nerves. But I Love Her, And I Dont Want Anything Happening To Her. Shes My Sister, And I Wouldnt Want To Change That For Anything. I Love My Sister.