Last Christmas my wife Emma and myself (mid thirties, married with kids) took an opportunity for 7 nights away in Tenerife at a friends apartment while the grandparents agreed to have the kids. When we arrived we spent 2 great days there before the apartment next to ours was occupied by 2 young lads from London taking a break for 4 nights only (21 and students), one of their parents owned the apartment and they had only paid for the flights. On their first evening the young lads talked with Emma and myself on our balconies whilst we all showered and changed before going out. Emma and myself went for for a meal and not long after we finished and the bumped into the 2 lads again, who joined us for drinks at our table. We all got along very well but Emma was enjoying and flirting with the young lads and encouraging them. It was now getting late and myself and Emma made our way home both the worse for wear, but the lads went on to another bar. When we got back we both went to bed but not too long after I remember being woken by someone whispering “Emma”, I knew who it was but didn’t move as my wife also heard the whispering. She got up and put a t-shirt on before going onto the balcony. I heard her greet one of the lads and heard them talking. He asked her if she wanted a drink with him but she declined saying she was tired and that I was asleep. To which he replied that was what he was hoping for! It wasn’t long before she agreed to nip round, he was home alone too as his friend was getting lucky elsewhere. She looked in on the bedroom before going to check I was asleep then I heard them next in the apartment throught he wall, they hadn’t gone onto the balcony for obvious reasons. Before long I noticed they had gone quiet on the conversation side but couldn’t hear what was happening but then I heard my wife cumming, after this the tension was out of their systems and they were going for it, it lasted 40 minutes and I heard her say goodnight to her new friend so I quickly hurried back to bed and she was none the wiser. Over the course of the remaining time we were all together they were constantly sneeking off together, my wife to change her bikini because it was rubbing and her friend to go and get some food from the supermarket, and all the time the other was left with me to keep me occupied and off the scent. A great holiday only I wish she was more open about it as I would love to watch her with another man!