You know that your gf’s family is leaving for a weekend, so you decided to make her a surprise. But how surprised were you, when you meet her sister instead of her, while sitting naked in their living room. However, looks like she absolutely doesn’t mind you being naked. She even ask, if you wanna stay. She tells, that last week her ex cheated on her with her own sis (your gf). So now it’s going to be logical, if both of you will have sex as well. And what is you will also send photo of her on your cock to your cheating gf?