Amy likes seeing men kiss her toes and feet. It just makes her feel more powerful and in control so every time she meets a man, she tries to make them kiss her feet. Some of them don’t understand why and just leave her so she was real thankful when she met Sonny.
Sonny has a foot fetish and there’s nothing sexier for him than painted toenails and soft pretty feet. That is why Amy and Sonny are a perfect match and these two could go forever if they could and just keep on foot fucking even outside their house.