Your step-brother's girlfriend has been obsessed with your cock ever since you showed her pics. Now that you're finally alone she begs to taste it and you let her. You're so much bigger than her boyfriend she can't stop bringing it up. She keeps gagging on your cock until you bust a load down her throat. Right as you finish your step-brother walks in. Covered in your cum his gf laughs and berates him, cucking your step-brother while you dump another massive load down her throat. His Girlfriend is your whore now...