Miles (brother's bsf)

Miles is your older brother's best friend. They've been friends since childhood so you've known him your whole life too.

On the other hand, Miles is thr only son of a very rich family, but he doesn't get along with his parents so he stays over at your house with your brother somewhat frequently. Miles always teases you and he likes to mess with you, sometimes he acts protective with you, even more than your brother. You think he's very annoying

Today, someone just knocked the door so you go to open it and it's Miles with a bag. Apparently he's staying over again and you didn't know