Now in my late fifties I am happily married to lovely lady who is 11 years younger. We often fantasize about third parties in our love life ( usually MMF) and I readily admit I encourage her to dress sexily and get a kick from the attention she gets from guys. I have been particularly turned when she has slow danced with other men at functions and seen 2 or 3 fondle her boobs and bum. We have never progressed further though. On my part the fascination of wife watching probably started in my late twenties when at the time I had a G/F who was only 19 and who had a bit of a reputation. Whilst fairly plain of face she was exceptionally slim and had the most fantastic breasts , the best I have ever seen or felt before or since. She knew she had a great figure and showed it off to best advantage with short skirts and low tops. To start with it really used to piss me off how she would lap up the attention from other men. We didn't go out for long but did have a holiday together in Greece where we shagged like rabbits. Never one to be shy she took to not wearing a bra and teased the hell out of the local lads. We used to drink in a particular bar most evenings and several times I caught the bar owner leering down her top . He was to me an old man but probably only my age now. What ever he was at least 35 years older than my Girl. This didn't deter him or her from flirting. On our penultimate night we were in the bar and I asked the landlord to take a picture of us. To which he obliged , G/F then asked me to take a picture of her and the" old" man. As they posed the cheeky sod stood behind her and cupped both her braless breasts for several seconds. She did not object. On the final night we were very pissed and ended up in the same bar. For some reason it was very quiet and soon we were the only ones left. The landlord invited us to sit with him for a drink . Somehow he managed to engineer him self sitting next to her on a couch with me opposite . With more drink she became sleepy and rested her head on his shoulder and he put his arm around her shoulders. Soon his hand wandered down to the top of her breast, then fixing his eyes on mine he fully cupped her boob. I wasn't sure what to do. He then proceeded to tease her braless nipple through the thin material. Whilst getting uncomfortable I still did nothing. Emboldened he slipped her shoulder strap right down to fonle her naked breast G/F let out a low murmur, she was clearly enjoying his attentions and was now awake. Pissed or not this was too much for me and I tried to get her to come home, but she was having none of it saying she wanted another drink. My ego dented I stormed off back to our hotel. Having sobered up a little I thought better of leaving her alone and went back to the bar now looked closed in semi darkness. Looking through the window was the scene indented in my mind forever with my G/F fully naked on her knees in front of the old man obviously engaged in oral sex. I cant embellish this and say he was hung like a donkey or anything but clearly she was enjoying her self . I know it was a bit pervy watching them but I was transfixed and waited until I could see him pulling her head to him before presumably emptying his sack in her mouth. For some reason they didn't appear to have had full sex , on my part I was strangely turned on and had to retreat to a side alley and masturbate. As you might guess we split up on return to the UK but I still often have one off the wrist thinking about that night wishing they did have full sex and what if my now wife did the same.