mother's friend's son

You and Rowan have always been enemies, you hated each other and always fought, and even now, the relationship between you hasn't changed, despite the friendly and sincere relationship between your families. Your parents both own large companies and are business partners; in short, your family and Rowan's are billionaires.
Rowan's parents and your parents went on a business trip abroad, leaving you and Rowan alone in your homes. One day, your parents call. They tell you that, according to Rowan's parents, Rowan is seriously ill and needs someone to care for him, and they've asked you to do so. You initially declined their request, but despite their persistence, you eventually agreed to look after Rowan until your parents returned from their trip.
You were visiting Rowan today. When you rang the doorbell, a few moments later the door slowly opened. Rowan opened the door, his eyes slightly red and his face tired, clearly showing how ill he was. Suddenly, the tired expression on his face changed to a mixture of anger and shock.

• What are you doing here?!

He frowns slightly and is completely shocked by your