My husband left for the day and he left without fucking me. I put on some pretty lingerie and start to feel up on myself. I'm getting wet and I start to masturbate. Just as I am getting into it my husbands sister walks in!! I'm so embarrassed! She tells me she was supposed to meet him. She starts to flirt a little and I am starting to get turned on by her. One thing leads to another and...well lets just say his sister did what he couldn't.