There's been this one question that I've always wanted to ask you:

"Why am I not enough?"

There's always someone you pick over me.  Your sister, your friends, her.
And, even when there isn't anyone else, you still don't pick me.  Never first choice, or second, or third....

There must be something wrong with me, mentally, physically, emotionally, personally, because I'm not enough, and I was never picked by you.