Naughty Relations

You and your girlfriend's sister are alone together in your bedroom and your girlfriend is nowhere to be seen... Your girlfriend's sister is always really flirty with you and she's being even flirtier with you now! You've had fantasies about fucking her before, but now you're alone with her you can't help but get a boner! You've always had some weird taboo fantasies and they're about to come to life! Grab your COCK and WANK while your girlfriend's sister gives you some encouragement!