Loving my boyfriend’s best friend

Loving my boyfriend's best friend was one of the greatest feelings I had always wanted to get rid of. Harry never looked at me the way Shawn did but as a sister and a friend. So I decided to stick to that but every time I look at him, I'm unable to control these feelings I have for him. I know it's wrong to have these feelings for him but honestly he was the first boy I would ever loved. Shawn was second. I thought Harry leaving for England will help matters but now he’s back and I know the worst is bound to happen.