You come in the bedroom you share with you wife to find your wife's best friend laying here in lingerie. She tells you that your wife told her that you two have been trying to get pregnant and that you've gone for a fertility treatment that helps you to produce more semen. But why should her friend get to have everything? It doesn't seem fair to her. She makes it very clear that she's come to take all your sperm for herself. She's been wanting in your pants for a while. You know this is wrong but you can't help but to get so hard at the sight of her and they way she's talking. Soon you're happily taking out your rock hard cock for her and she starts to give you a blowjob better than your wife could ever give you and you can't help but to cum down her throat pretty quickly. She's not disappointed though, because she knows that treatment means there's more cum in those balls and she can feel how swollen they are. Next thing you know, you're on top of her fucking her while she talks about you impregnating her instead of your wife. She tells you not to pull out and you give her a nice big load in her pussy. But she wasn't kidding about talking all your sperm for herself... she goes straight into titty fucking you till you blow another load, this time on her face and tits. But she's still not satisfied. She wants those balls empty for your wife so she gives you a handjob till you blow another load on her, then she sucks your cock while massaging your balls, coaxing all the rest of the cum out and down her throat again! Now there's nothing left for your wife!