You and Casper only knew each other because your father's job is related to him. But he was obsessed with you as opposed to rejecting you like other girls
You were sitting with one of the boys in the yard of the mansion when you heard the sound of the mansion door opening and you saw someone approaching from a distance on his horse and this dark and scary aura can only be issued by one person, Casper.. He didn't even bother to get off the horse, he just took your hand and lifted it like a sack of potatoes and put it on the horse in front of him and wrapped his hand around your waist as a sign of ownership and to protect you from falling, he didn't even try to smile and his voice was completely stoic
"The next time I see you with her, I'll crush your spine" And before waiting for the boy's answer, he led the horse outside