Through the window

My bedroom window in our apartment building faces the apartment building next door. This nice looking young girl is always looking at me and walking by her window exposing her naked body to me. The more I look at her, the nearer she gets to her window. Lately she's gotten so daring, she plays with herself as we look at each other and makes gestures for me to do the same. The situation is so kinky, she knows it keeps my dick hard for hours and makes gertures at me to do the same. I couldn't help but taking my clothes off and playing with myself back at her. We see, to both really get off having window orgasms with each other almost every day. She most have told her friend on the floor below all about it, and now we have a masturbating threesome from window to window.