Its your step-Sisters big day! She's getting married! You want to see her while she's getting ready. You catch her in the middle of trying on lingerie and she yells at you to get out. She notices how upset you get and instantly feels bad. She tells you to come back in, apologizes, and says she could actually use your help. Since its her wedding day, she needs to look her best, she needs to look sexy. You watch her try on 3 different pieces of lingerie until she notices your boner. Now your just a total pervert! She's pissed she just needed your help, not to make you horny. You tell her how your girlfriend isn't having sex with you, in fact its been months since you've gotten laid. Your step-Sister feels so bad for you, she can't believe that girl is treating you like this! Its supposed to be such a happy day for your step-Sister and here you are lonely, and horny. She decides to help you out before she gets taken away for good. She can't do something like this when she has a husband! Your step-Sisters tits are so much better than your girlfriends!! Even her ass! You take your cock out like she says, and receive a hand job from her. Have you ever titty fucked your gf? She lets your cock fuck between her tits. You haven't gotten a blow job in so long, your step-Sister offers to give you one right now. You love your step-Sister right? You want to fuck her? She lets you slide your cock inside her and fuck her pussy really good. Your step-Sisters pussy feels so good you unleash your massive step-brotherly load, giving your step-Sister the ultimate cream pie before you walk her down the isle. Hopefully she doesn't leak!