At a family wedding two years ago most of the guests had to crash in various halls and makeshift bedrooms.The room my wife and I ended up in was an old school assembly hall bit it didn't matter much,,we were all pretty drunk and we all knew eachother.There was a line of mattresess along one wall and after having a few final drinks and laughs we all fell asleep.It was all quite cosy and with it being so cramped we were all bunched up really close.Anna was horny,,[ as per usual ] and she was lying on her side playing with my cock,,,I was pretty sure everyone was asleep and just as I was about to get her to climb ontop of me a hand went to her shoulder.She froze and I looked over to see it was her sisters husband Ben,,when we`d gone to sleep it was one of the other women that was beside Anna so it was a bit of a shock for her to feel a guys hand touching her,,,,he slipped Anna`s shoulder strap down and reached around for her tits,,I wasn`t sure if she was going to let this happen but I reached over her and gave him the thumbs up anyway.I kissed her to let her know I was ok with what was happening and Ben had now slipped Anna`s lovely chiffon dress up over her hips and had moved in real close to her.Her right leg moved forward and over mine to give Ben access to her pussy,,she gasped as he pushed his cock into her.I lifted her leg up a bit more to help and held her as he fucked her.He pounded and pounded her and I held her as tight as I could so as not to wake anyone up.After a few minutes of solid fucking he let out a little grunt and then rested before pulling away..He got up and went and slept somewhere else and to this day Anna doesn't know that it was her sisters husband that helped himself to her that night,,,,with a little help from me