During the summer, actually it was in early August. We had all of our friends over for a BBQ and party. There wasn't any specific reason just a party. Many of us swam during the day in our pool ,so most of us women were wearing bathing suits or bikini tops and cut offs like I was. As the day went on many people got very drunk , I tend to flirt more when drinking. My husband hasn't ever said anything about it also he hasn't ever said anything about the fact most of the guys we hang out with hit on me all the time. Well as the evening turned to night I was drunk and exhausted so I excused myself to everyone and went upstairs to bed. I could hear everyone having a good time as I feel asleep. I'm not sure how long it was after I woke to see the bedroom door opening , I figured it was just my husband I couldn't make out anything else because it was very dark. The thin sheet I was laying under was slowly pulled off of me, exposing my naked body. Again I thought it was my husband going to get some which I'm all for. My legs were spread and he started going down on me , at this point honestly I knew it wasn't my husband, but I didn't do anything to stop it. Then he scooped under my legs and drug me to the end of my bed. He started slowly at first I could feel that he was way way bigger than my husband , I couldn't make out his face still as his motions increased to an incredible pace , I started moaning and making noise then it happened I had my first true explosive orgasm. Just as I lay there breathing hard and quivering as he continued to hump me harder and harder finally I could feel him coming in me. A few seconds later he was gone. I never told anyone and up until yesterday I didn't know for sure who it was. Yesterday for what ever reason talking with a couple we know the subject of cheating came up , we all said that we would never do that. I was alone for about one minute with my friends husband when he said to me. Well we both have cheated at least once but that's our little secret. I stared at him in disbelief. He said you should really call me sometime I think you were the hottest fuck I've ever had.