This started on New year's Eve we went to a cabin for 3 nights with another couple which was good but it had no TV and no pub within walking distance so evenings was games and drinking, on New year's Eve we got drunk and started playing strip poker as couples which wasn't good as I was completely naked after losing twice, we were sat male female opposite each other so I was across from my mates wife etc, the game goes on I'm out just watching and finally some tits come out this incredible pair of milf boobs with stunning erect nipples looking at me, my cock went instantly hard this was the first point which was nothing like my girlfriend she told me not to cover up and let my mates wife look at it as she had made it erect. The game goes on and eventually my mates wife is naked and she's sat right in front of me legs open hairy pussy on full view my cock was absolutely throbbing my girlfriend grabbed it and waggled it saying somebody likes what they see and at that moment my mates wifes vagina opened, as soon as my girlfriend noticed she came up with idea of the losing couple having sex Infront of the winners after a few looks at each other around the room we all thought it was ace, game finishes with me naked his wife naked him naked and my girlfriend in just her knickers and actually really surprised they went at it Infront of us it didn't last long needless to say and she grabbed a really squeezed my cock when she came. Nothing has been said between us as a group since but my girlfriend and his wife have been discussing it a lot mainly because he has got a small cock and for what ever reason my girlfriend has become fascinated by it, over the past couple of months she brings it up a lot along with getting me to wank Infront of her whilst telling her what I liked about that night so she has lots at videos of me wanking whilst describing my mates wife tits and pussy and how they swing in doggy. It's at a point we're she only has to mention her tits and I get an erection, this morning I was showering in the wet room and in walks my girlfriend who sits down for a wee closely followed by my mates wife she didn't bat an eyelid at me being naked and surprisingly my girlfriend asked me if I thought my mates wifes tits looked good in her top and that was enough my cock went hard, I then found out all of the videos of me wanking had been given to her and she liked hearing me talk about her whilst wanking and in return my girlfriend had videos of his cock and they have been discussing our cocks the whole time, before they left I was given a hand job Infront of her and then they walked out saying nothing. Is this a swinging opportunity or an extreme vouyerism thing as she has never mentioned us swapping she only talks about cocks and me liking his wife naked I don't want to suggest swinging out right and ruin whatever is starting as I'd be happy with flashing and watching