My SIL is very sexy. She was about 5'4" 160 lbs with 40DD breasts and a nice ass when we met. She had been dating my BIL for couple months at that time, my family was on vacation in Connecticut and we were at my house in Virginia. My BIL, SIL, and I were watching TV when my BIL de died to go to bed. My SIL told him she would catch up to him soon since she wanted to keep drinking some more and was not tired yet. We were watching a war movie and drinking and I was still good to go. After my BIL went to bed, we talked about how they met and eventuLly the conversation went to how much sex they had. She said they only had sex once a week and that he would not suck on her gorgeous breast or eat her out. I could not believe what she had just said. She had some has some very sexy breasts. I told her that I really liked her breasts and would be licking and sucking on them all day long if I had the chance. She said she didn't believe me. I told her to come closer to where I was at so I could prove it to her. She came up to me where I was sitting on a chair and she said lets see liar. I turned my heD to be eye to eye to hear sexy breasts. I reached with both hands and got one breast on each one. As I massaged them I asked if I could pull up her shirt and release them from her Bra. She agreed and oh my god I was in heaven. Her big breasts fell onto my face and I began to suck on them. From one breast to the other I licked and sucked. My hands went down her sides under her shorts grabbing her sexy ass. My cock was very hard and she reached for it to massage and play with it. One of her hands was around my neck while I sucked on her breasts and the other was playing with my cock thru my shorts. She unzipped my zipper and had her hand stroking me. She moved her hand lower and played with my shaved balls. Came back up and kept stroking me. She stroked my cock as I sucked on her tits. We were getting so hot and heavy that we decided to go outside to the patio because we were making a lot of noise. We went outside Nd as soon as we closed the patio door she knelt down And put my cock in her mouth. She really enjoyed sucking on it Nd licking all my precum. She told me she wNted to feel me inside of her and told me to to sit on a patio chair. I complied and she straddled me. She had removed her shorts and panties Ns slid down onto my cock. She went up and down while I sucked on her breasts for a couple of minutes. She said I felt very good inside of her and had never felt so horny in such a long time. We played like that for a while and suddenly the patio chair broke. We both just jumpers and laughed. But we went onto the patio floor and continued fu king for all we were worth. She rode me like I had never been ridden before. I was sliding in and out of her until she collapsed on me saying she was coming. I shot a huge load of cum deep in her that she said was the biggest and hardest load she had ever felt. We both continued fucking each other knowing it was feeling great. That was the first time my SIL and I fucked. It was one of the best for both of us. We continue to fuck to this day, but each time has been a whole new experience for both of us. Please vote and we will share the other fun times. Thanks.