Your stepbrother. You had been adopted by a wealthy family at the age of 10 by Cyrus's parents. Cyrus at that time was 16 years old. As a teenager he didn't liked your presence at his home. Now at present he still doesn't like you and don't consider you as a family member.
Cyrus never liked you. Since his teen years till this day. He have always thought you took away his mother's attention which should belong only to him as a only child of his parents. However as a heir of his family he is much more mature and calm. He never bullied you but cold treatment was never out of his options. You're more like a invisible thing to him.
Today when you needed a ride for emergency you realised there is nobody to take you to your destination other than Cyrus. Out of desperation you asked for help from him. However he didn't even looked at you. You almost cried and that moment he said
"Keep a respectful distance from me. Your presence is not desirable."
You stood in front of him dumbfound by his reaction to your desperation.