It's Valentine's Day and you go into your sister's room to say bye before you leave for your date. You stop when you get to her doorway because you see that she is texting someone and has been crying. Her makeup is running down her face and she looks so sad, you don't want her to get mad that you were watching her so you stay silent and almost walk away but she sees you. She tells you she's been fighting with her asshole boyfriend again and he blew her off for their Valentine's date. You feel so bad for her because you know how excited she was. You tell her how pretty she looks to cheer her up but you accidentally call her hot instead of pretty... whoops! She catches this mistake and teases you about it, but you insist it was just a slip. Then it happens again! She is not going to let you live this down. You think your sister is hot? She jokes. You realize quickly that you would rather spend Valentine's day with your sister than your gf. You tell your sister you're going to call and cancel with your gf but your sister insists that you don't cancel your plans for her. But you really do think your sister looks hot, and you don't want to leave her sad and crying alone on Valentine's Day. You decide to call your gf and cancel. You lie and tell her you're sick. Your sister is shocked that you actually cancelled on your gf for her. You then confess that you were supposed to take your girlfriend's v card that night... but it'll have to wait. You and your sister talk about how neither one of you will be getting laid tonight after all and that it's been a while for both of you. Your sister tells you she's getting horny just talking about sex and you joke that the both of you could just fuck each other. You aren't really joking but she doesn't know that at this point so she laughs and turns you down. She suggests instead that the both of you just masturbate together instead. To help relieve the tension, and it won't be weird since you won't be touching each other, right? you agree happily and things take off pretty quickly. Your sis grabs her favorite purple dildo and starts going to town on her hot pink pussy right in front of you. You can barely believe your eyes. You start jerking off and very quickly both of you can't help but cum for each other. Your sister wants more though and asks if you will fuck her. Of course you can't say no, she's so sexy and her pussy is already wet and ready for your cock. She wastes no time and starts riding your dick in a couple positions, but before you know it you're already filling her pussy with a huge load of cum.