She breeds you

She presses the tip of her half-erect cock against your still leaking cunt and presses forward , feeling your lips part and accept her full shaft with no resistance

"Gweeeen..." you protest weakly. Your pussy spasms and clenches around her rod, and you feel it grow and harden in response.

"Sorry Sara but it felt too good, I NEED to be inside you again" she arches her hips back, pulling out almost to the tip before slamming it back in, forcing a gasp from your lips. She does it again and again, maintaining her slow pace and enjoying your reactions. Gwen's cum still felt warm as it sloshed around inside you, mixing with your own arousal and dripping lewdly onto the floor. She holds your arms tightly behind your back as she pins you against the shower door , grinding her cock into you while whispering hungrily into your ear.

"Mmmm, you sound like you're enjoying yourself. Are you getting off on being railed by your big sister? Getting filled to the brim with her hot, thick cum? I'm stuck with this cock because of you, so now you're gonna be fucktoy until I'm satisfied!" And with her open declaration she starts fucking you, roughly bouncing you up and down on her cock, your erect nipples rubbing against the glass. Pinned between Gwen and the shower door, there's no chance for your over-sensitive pussy to get any relief and you climax on her cock almost immediately.

"Cumming already?" She moans as you pussy spasms around her. "Did the thought of being my fucktoy turn you on that much?"

You aren't fit to answer, the pleasure forcing your lips into a near permanent "O" shape, with your breathing too ragged to manage anything other than a gasp or whimper. You feel her strokes get shorter and more frantic as she nears her own orgasm.

"Hnnngg, cumming..." she moans out, and you feel your womb get flooded again. your pussy clenching in time with her cock. She eventually lets go and you immediately slump to your knees, her cum flowing profusely out of you forming a lewd puddle on the shower floor. For a minute or two you're both too spent to move and just let the shower flow over you, washing the sweat and cum away.