Nathan eventually does as he's told. The way the stepsibs still feel about each other is obvious in their rough handling of each other, but that doesn't stop them from taking some pleasure in their encounter. Then he pushes her panties aside and just shoves those fingers right into her greedy twat to find her nice and wet for their encounter. Flipping Aria onto her hands and knees, Nathan drives home in doggy. He grabs her by the neck to bring her up, then traps her arms behind her back to keep her pinned as he pistons in and out of that tight twat. Aria is here for it, moaning and squealing as Nathan gives her what she wants. Moving on to Aria riding Nathan, she puts all her disdain into taking that big dick nice and hard. One more round on her back and then Aria strokes the cum right into her mouth as she brings Nathan off. It turns out these stepsiblings don't have to like each other to have fun together.