Help Me Stretch Stepdaddy

You check in on your stepdaughter Julz and she is working out in her room. She asks you to help her with some stretches. Since your wife is not around, you hesitate but agree to help. You can not but notice her huge tits and nipples poking out of her sports bra. You try not to look but you get caught staring. Stepdaughter Julz confesses she has a huge crush on you and wants to kiss and make out. What can you do? Few days later, your wife is out and Julz wants your help with her workouts again. She is so horny and wet that she starts to masturbate right in front of you. Your cock just gets hard without asking and then its all bets off. Can you  let your stepdaughter ride your cock and are you going to run away? Only way to find out is