Step-Sis & Her BFF

Your blonde brat of a step sister always has her also blonde girlfriend over. They act insufferable, but of course when they have any kind of a problem, they turn to you, the wise stepbrother. You are there to help, not becuase you feel like to give advice, but because your stepsis is so hot she gives you a boner 24/7. She just got dumped by her boyfriend which gives you an opportunity to really deepen your relationship with her, and by that I mean to have sweaty sex. And since her crazy girlfriend is always around, it's a threesome in the making!