It had been a few weeks since our neighbour Stacy had seen my wife Beccy and I having sex.
Stacy must've been on night's because we hadn't seen her in her apartment since that night.
Today was a normal Saturday, we had been food shopping in the morning then had Henry and Cindy, our friends over for dinner.
Cindy is a long-term friend of Becky. They attended the same high school and went to Uni after.
Over dinner Cindy said to me "I hear you've been fucking in front of the neighbours Matt."
Apparently Becky had told her all about what happened. I shouldn't be surprised, I hear all about Cindy and Henry's sex lives too.
"Not at all," I said, "she happened to be watching us. Anyway it was Becky that started it. She woke me up all horny."
Becky looked over to Cindy. "He's right I was the one that woke him up. It was quite exciting watching someone fucking. She is so hot and the guy she was with had the biggest cock I've ever seen."
Dinner continued with loads more innuendo about what happened that night, lots of laughs were had until Henry and Cindy called a taxi to go home. We said our goodbyes cleared up the apartment and settled down for the evening.
Later that night Becky and I were in bed, Becky asked, "what did you find more exciting watching Stacy fuck that huge cock or that Stacy was watching us."
I replied "I'm not sure, I think it was watching Stacy, watching her having sex was so hot for me. Especially being able to fuck you at the same time."
"I think the best part for me was her watching us." Beccy said. "I loved the thought of her getting off watching my face as you were sinking your cock in to my arse. Even just describing it to Cindy earlier got my pussy so wet."
"Stop it, you're getting me excited, my cock is already semi hard." I said.
"Should we test the theory?" Beccy excitedly asked.
With that. Beccy stood up lifted her nightdress over her head and sat in the chair opposite our bed. This time all the lights are were off so no one could see in, I looked past Beccy as she spread her legs in the chair with her back to Stacy's apartment. It was dark in there so I assumed Stacy was at work.
Becky started to reach down to her pussy opening her pussy lips, she began to circle her clit with just one finger. letting out little moans as she did.
She moved her left hand to caress her swollen nipple whilst this was happening, I reached down under the covers and grabbed my erect cock slowly stroking it as I watched Becky's show in front of me.
Becky spoke, "so what do you think? Are you enjoying the show?"
"I have to admit, you put on a great show, if only there was more of an audience." I said starting to breathe heavily.
"Although if Stacy was watching too she wouldn't see you in that chair with your back to the window." I mentioned "does that bother you with your new found showing off kink."
Becky got up from her chair. She walked over to the bedside table where she took out her dildo. It had a suction cup on it.
Becky said "how about if we do this then?" She walked towards the window and stuck the dildo to the glass.
She bent over in front of it rubbing the the cock along the lips of her pussy. She then bucked back finally taking it into a pussy. I could hear the sound of her wetness as the cock pressed into her.
At that moment Stacy's light in her bedroom came on. She appeared at the window. "Beccy, Stacey's home and she's at the window." I said.