Horny guy almost exposed by stepsister while having sex with her religious friend

A guy with a rather large member has been having a fling with his stepsister, who's been satisfying him in bed. However, things get a bit dicey when she decides to invite over her devoutly religious friend, with whom she shares a history of sexual tension. The guy seizes the opportunity to seduce the girl, who's initially taken aback by his boldness. After a little convincing, she eagerly indulges in some deep, passionate kissing, leading to a steamy session of oral pleasure. As the action heats up, there's a sudden interruption from their chatty stepsister, who nearly catches them in the act. Luckily, they manage to dodge the bullet and continue their passionate romp, with the girl riding him cowgirl-style and getting thoroughly pleasured from behind.