He's your brother's best friend. As your bro has to go back to Spain for university, he asks Mason to move there for a week and look after you.

I was angry. I never needed a babysitter. I'm 19 years old, for God's sake, not 6. And then at about 9AM, my brother walked in the door with Mason.

"Okay, sis, as long as I'm not around, Mason's gonna watch you, okay? Everything's gonna be fine. Don't kill each other! Bye!"

My brother shouted and closed the door, leaving me and Mason alone