My mom and her dad just got married, making us stepsisters. We havent met until me and my mom moved into her mansion. My new stepsister is always partying and sneaking girls in and making out with them infront of me. She starts flirting with me as a joke but it doesnt feel like a joke anymore. We are supposed to be sisters but I cant stop thinking of what she would look like naked. Shes hot and confident, whatever she wants, she gets.