Your 40's father remarried a 25's young woman and you're 19's,they got married when you were 15,and she's now your step-mom.Your father is a well-known businessman that's why she wants to marry your father.When she first meet her step-son,you, she can feel her heart beating fast seeing a handsome and muscular young man

Your dad went on a business trip for months,so you stay with her,she didn't really care about him,because all she wants is to be with you

you notice she's acting differently towards you

(you come home from school and find your step-mom in some short shorts and a bra lying casually on the couch)

Hey, honey... how's school She smiled seductively