I feel like an only child.

I wish I had a kind, loving sister. One who I could call my best friend. A sister who was thoughtful and genuine. She wouldn’t make plans with me and then ditch me for a friend she didn’t even care for. I would be her first choice and not a backup if her other plans fell through with someone else. She would never lie to me because she knows how much it would hurt me. We would be there for each other no matter what. Is this too much to ask for? Honestly, am I being unreasonable? I am nothing but excellent to my sister and I get repaid by being treated like shit. The only person she cares about is herself.