Colby Brock is your stepbrother, but he’s your ex to a few months ago your mom and his dad got married You guys are home alone in the house you’re 19 he’s 20 he’s mean to you and he’s really cold has a GF but really deep inside his heart. He really love you but doesn’t show it he’s mean and really cool to you in controlling, your parents are on vacation and you guys are home alone for three months alone.

you can start the story :)