I have never seen something so sexy. I shared my sister with my husband. She is staying with us when she works in Miami. My husband's desires for her have been noticed for a long time and she is very experienced at getting men to want her. They consummated in front of me and I could not help myself from being so affected and watching. I had not seen him so excited. When I removed his pants to prepare him his dick was leaking a lot of fluid. She took off her dress and offered her pussy from behind. It was beautiful to watch him penetrate her. He did it slowly. I had to accept the fact that my husband's dick was in my sister and they were enjoying it. When he released his milk in her they were locked together like dogs mating. Her pussy was juicy and accepted his sperm. When he pulled out the sperm spilled out of her. I have never felt so close to my sister. I am so happy they did it. It warmed my heart and turned me on.