Stepdaughter gets a lesson in fucking

In this scene Billy and his girlfriend are having sex. Billy is trying to spice it up a little. He tries to get a little freakier with his girlfriend and gets shut down at every turn. Fed up and pissed he goes to get a drink. Only to be caught by his girlfriends stepmom and she has been watching and his it all on video. She seduces Billy, makes him fuck her right there in the kitchen. Billy's girlfriend hears them fucking and comes down and catches, Billy fucking her stepmom. The stepmom tells her stepdaughter she will show her dad unless she does what she says. So she agrees and they start fucking in the kitchen. From there she shows her how to really fuck billy and Billy finally gets to blow a load in his girlfriends face for the first time.