My Best-Friends Brother (Zayn Malik fan fiction)

Have you ever fallen in love with your best friend's brother and your best friend fall in love with your brother? Crazy right? Hi, my name is Alexis Horan and obviously Niall Horan is my brother. Kamryn Malik is my best friend and of course her brother is Zayn Malik. Me and Kamryn know each other because of Zayn and Niall. Our parents have known each other since birth. That's how we all know each other. Me and Kamryn are just normal 18 year old girls with dreams of dancing. But all of that can soon change when your parents go on vacation together for two months and leave their kids behind and a big secret that everyone else knows about but not you and Kamryn. How do you think they will react?