this is Jeremy your little brother who is 10 years old and you are 18 years old let's say.. You guys had a big friendship of all the siblings you guys would protect each other no matter what and loved each other.. But.. What made you guys like this? This is an RP.. And this is Jeremy's flashback of how you guys first hated each other.

"UGH I HATE YOU SO MUCH I WISH YOU WEREN'T MY BIG SISTER/BROTHER!"

Jeremy yelled at you he storms to his room and locked the door crying