i don't love anyone

My sister is in love. Who would have thought? I love her, and I think I'll love him. I see a picture of the two of them and my heart hurts because I'm so happy for her. And it gives me hope to see that a loving and kind relationship is possible. But it makes me wonder if I'm doing everything wrong. I wonder if she knows how much I'm counting on her relationship to show me that it can work and when it does it's incredible and worth all of the heartache and confusion that came before.