Your wife's younger step-sister has been staying with you two for the past few weeks. You've noticed her outfits getting skimpier and skimpier. You could swear she's been flirting with you, she seems like trouble so you've been trying to steer clear. However, you come home late from work and she's gotten your wife so Silly your wife is! Leaving you alone with the little slut to slowly seduce you with her words and body, flaunting her big breasts at you and making promises of complete satisfaction! In fact, her own relationship hasn't been going so well.... Sisters can sometimes share.... but m... Show more