By this time, my then girlfriend and I had decided to be as daring as possible! I guess it's important to remind you that I am a 40-year-old guy in decent (gym) shape and still with as much desire as when I was 20! My GF was in her early twenties and from Paraguay - HOT body, toned abs and long, slim but muscular legs, and an ass and pussy that no man could refuse! She loved sex and loved to please. While I taught her how to be selfish and put herself first and enjoy as many orgasm as possible, deep down she always needed to feel that the other person was being satisfied. She was quickly learning that guys preferred fucking girls who knew how to be pleasured before pleasuring.
Anyway...
We had already had various threesomes with other hot girls (she was at first Bi curious but now becoming very Bi.) and been to an amazing sex club in Madrid several times. But we were still excited to experience more and now we were fully prepared to push the boundaries.
I don't exactly remember how this particular idea came to mind, but she smiled and said, "this could be interesting". We used Tinder to find a hot guy open to a MMF experience and who was local ish. We never trusted the photos so always met people first, somewhere local, before inviting them my place.
After scrolling through a lot of profiles, we matched with three guys who we both approved of - they met the age, height and looks requirements (I was not interested in seeing an ugly guy with my girl). After exchanging a few messages it became one guy ticked the extra box, in that he seemed quite humble considering his age and looks. He was my height (6ft) and slim but muscular, he did triathlon so had low body fat and broad shoulders. He had never had a threesome before but had now been single for a while and was intrigued by our proposition.
We explained the desire to meet and it turned out that quite near him was a shopping center that we knew. We agreed to meet at 8pm on the next day which was Friday, so it was likely to be busy. We agreed to specify the exact place just before 8pm.
What the guy would not have expected, nor my GF, was my plan for the meeting. I explained to my girlfriend that I wanted her to meet him alone and take him to the disabled toilet to get acquainted. She frowned at me! I said that I wanted her to dress sexily in a pair of elegant shorts and modest top that revealed enough to make him want more... that I wanted her to suss him out as quickly as possible in this risky place and decide if she wanted to kiss him. That while in the toilets they should kiss and nothing else and after five minutes or so she / they should come back to my position and we would decide on the next step. She agreed that if they kissed she would tease him and not let his hands wander too much. Her sides, her hips, shoulders, face... But no breasts action, no ass... To drive him wild with desire.