A mature man gets frustrated and has sex with a young girl's vagina

The scene opens with a mature man, who we later learn is at work, getting frustrated with his younger girlfriend. He can't seem to satisfy her and she's not helping matters by moaning and writhing in pleasure. He takes matters into his own hands and decides to take her to his home to have sex. He bends her over and starts to penetrate her, but she's not responding in the way he wants. He becomes more frustrated and decides to use his hand to stimulate her. He pounds her hard and fast, and she begins to moan and writhe in pleasure. The camera zooms in on her face as she reaches climax, and she screams in ecstasy. He then takes her to his bedroom and continues to fuck her hard and deep, until he can't take it any longer. He collapses on top of her and they both fall asleep.