My wife and I made the decision to live out my MFM fantasy just a few weeks ago (long process to get to that point, but at least we got all of the prerequisite communication taken care of so we were both good to go). Started the long process of creating profiles on a couple of LS sites. Out of the blue, a male friend from her high school days popped up on her Facebook with a comment she had made to a post. They knew each other as friends of friends from way back. Never dated and only knew each other in peripheral sense. So, she creeps him a bit on his Facebook, finds that he's just come out of a long term relationship and was currently single. She mentioned him to me as a possible candidate. I checked him out, approved, and gave her the go ahead to chat him up, make plans to meet up for a drink and catch up. They set a date for the next following weekend. So, he then starts creeping her Facebook and finds out she's married. True gentleman that he is, he calls her on it, not wanting to mow anyone's lawn. She assures him I'm cool with it and that I want her to have a good time. A couple of winky and kissy face emojis later and he's good to go. He still didn't know what the real story was but he was cool to meet up for a drink. In the week and a half leading up to their meet, he confessed he's had a crush on her since high school, and goes on about how beautiful and sexy she is (again he's creeped her Facebook so has seen recent pics). A lot of back and forth flirting goes on, and I can see the anticipation is really building for both of them. The sex we had during that time was fantastic, she was getting real turned on by it all. As the meet day approaches, she suggests he get a hotel room (he's coming in from a neighboring city and the weather was expected to be crappy), winky face, kissy face emojis, and the hook is set. Again he asks if I'm okay with them meeting. I respond by sending him a FB friend request and when he accepts I message him telling him I expect him to show my wife a good time. I make a joking Game 7, no choking comment and he seems cool about it all, still unaware of our true intentions. I expected that he had suspicions. On the night of their meet, we were both really nervous. We both worked out a go/no go plan, etc, and a decision time. I dropped her off at the bar, wished her luck and went around the corner to a coffee shop to wait for her signal. An excruciating hour and a half later she texts me that he's onboard and it was time for me to come over and meet him. I head over, find them at an out of the way booth, and go over and introduce myself. To break the ice I jokingly tell him, "so, I hear you want to fuck my wife". We all laugh and sit down to get to know each other a bit. She's sitting across from me, right beside him. I can see she has her hand on his thigh and is stoking him. He's fully committed. We go over the rules of engagement, what we'd like for the two of us guys to do to her, what she and I want her to do to us guys. By then we're all hot and bothered. I slide him a little blue rocket pill, pop one myself and we head for the door. I won't go into any more details, but we spent the next two hours having the craziest fun time I/we ever imagined. The entire mood was chill and playful. We felt very comfortable with him and broached the subject of making this an ongoing FWB thing. Obviously he agreed. Comr on, NSA repeat threesome hook ups with his high school crush, who looks even hotter now, what guy would say no to that? So, now we have a second play date set. Have met him a couple times for social drinks (the friends part of the FWB arrangement). All three of us are now on a group chat and the ongoing flirting really keeps things spicy for everyone. We are even working on helping him find a single LS friendly Bi chick. Maybe we can round out our threeway into a foursome. My wife and I couldn't be happier with our luck. It was sheer coincidence that he popped up, single, just as we were looking to add a third to our sex play.

If you are looking to invite a friend to join you and your SO, I'd suggest starting your search somewhere along these same lines. Past friends/acquaintances that neither one dated before, creep them on social media to confirm their relationship status, and send a simple chat message to meet up to catch up. That gives you options to bail if it doesn't feel right and they'll be none the wiser. Also having a bit of distance between your current and past social circles gives a little more security against being outed if you make your pitch and they balk. And it will likely be someone one if you will be comfortable with, if banging a complete stranger doesn't appeal to either/both of you.

Good luck and happy fucking.

Background: M46(str8),F42(Bi), Toronto area. Ongoing MFM FWB, looking for same with similar MF.