I'm a guy and I'm in love with my older sister.

I'm a 26 year-old guy and my sister is 35 I'm completely in love with her. I know it's wrong but I cannot help it. When I was a kid I felt like she was my best friend and I used to follow her everywhere and do anything for her. When we got older I realized I was in love with her. I know it's wrong but I can't help it. I never acted on it. I never even told her about it. She's now married and has two kids. I'm still in love with her.