1. Your sibling taking your things without asking drove you crazy at first, but finally it becomes you two’s unique way of building trust. 2. When getting older, you realize that sharing resources like closets and games can make life easier. 3. The harsh battles you fought with your sibling enhance mutual understanding (strengths and weaknesses). 4. You two are each other’s Muse at times and this makes you the best team to tackle countless missions impossible. 5. Being brutally honest to each other helps you two become a better version of yourselves. 6. Your sibling keeps almost all of your secrets. 7. When you feel hurt, your sibling is the first one who gives you comfort and warmth.