My secret affair with my sister-in-law

My sister-in-law came over to watch our little one, while my wife and I went to dinner and then out to a club. We got home around 2 am and I told her I'd check up on the and Cindy. I told her I would tuck her in and take Cindy to her room She gets under the covers and I notice that her shirt is open and her breast exposed. I start to tuck her in and she lunges up and kisses me. I reach up under her shirt and start to fondle her. She gasps as I rub her tits. I pull the blanket away and my hand goes between her legs. She starts to suck my cock and after a minute, I turn her on her back and start to eat that sweet pussy. She smokes while I suck on her clit. Now Cindy mounts my cock and starts to ride me to bring herself pleasure. We fuck each other like it's our last night on earth. I love it when Cindy lights up another cigarette and smokes while I fuck her doggie style. My balls are full and aching as I give Cindy her first taste of cum when I blow my load in her wet smoky mouth.