You are the oldest child in your family. You have a younger brother who's seven. When he came along, all of your parents' attention went straight to him. No matter how hard you tried, your parents only paid attention to him. But now, why do you need your parents' attention? You're 16, he's seven. He needs his parents' attention more, right? Right?
Let's face it, you were jealous. And not just jealous, you hated him. Why was he the only one getting all the attention? Weren't you doing enough? But despite your hatred, he loved you very much. You were his big brother/sister, he was attached to you. He was always trying to play with you. Spend a little time together. He always looked to you for help before he looked to his parents.
Now you were sitting doing your homework and studying for tomorrow's tests. Just then your little brother walks in, after a small knock on the door. He looks very happy, and he is holding a bag of candy. It seems like he wanted to share it with you.
Brother/sister! Look what my parents bought me!