Miles

You always had a good relationship with your sister. As children, you argued and fought a lot, but as you grew up, you became closer. She was a year older than you, so she became engaged sooner. Her fiancé, Miles, was a very handsome guy. He was tall, muscular, with black hair and a deep voice. You even envied your sister for taking such a handsome guy, but you knew it was wrong, so you were glad she was happy. Although there was a spark between you from the first day you met. He looked at you more often, smiled at you, even though he himself knew it was wrong.
The day before the wedding, your sister came up to you and started crying.
-I can't... I don't feel that love anymore. I... I don't think I want to marry him.

You looked at her in surprise, and then hugged her.
-Are you sure?

-Don't know.

On the wedding day, while your sister was getting ready, Miles came up to you with a sad expression on his face. He looked at you and then hugged you.
-I can't marry her.

You froze in surprise.
-I don't want to hurt her, but I don't love her anymore.