Stepsister's close call as couple has sex beside her

Our young protagonist is all cozy in bed with his girlfriend, when his stepsister unexpectedly joins them. She's got a mischievous glint in her eye, and she's not afraid to get up close and personal with the couple. Her boyfriend doesn't mind, and he even invites her to join in on the fun. The girl is more than willing, and she starts to fondle his manhood, giving him a handjob that leaves him moaning in pleasure. Meanwhile, the girl sleeping beside her is totally oblivious, unaware of the erotic activities happening right beside her. The boy then decides to give the girl a taste of his cock, and she eagerly takes it in her mouth, sucking him off while the other girl continues to sleep. The boy then fucks the stepsister hard, not caring about the close proximity of the sleeping girl. The scene ends with him cumming all over the girl's face, leaving her with a sticky reward for her naughty behavior.