Later that day, Riley finds that Damon has been jerking off into her panties and putting them back in her drawer.
They keep going, with Riley falling to her side so that Damon can spoon her from behind as he brings her off again.
When Riley Reed walks in and strips naked, Damon hides in the closet and strokes his stiffie.
After seating herself on his stiffie, Riley takes turns grinding her hips and letting her stepbrother do all the work as she takes what she wants until she squirts everywhere.
After getting on her knees so that Damon can pound her from behind, Riley orders him to lay on the bed so she can climb on top of him.
Moments later he pulls out one last time, and covers her pussy with his jizz just as she demanded.
Only after her stepbrother has jazzed in her mouth does she realize that she has mistaken his identity.