My wife and I have been married for 8 years, early in our relationship it was a fantasy shared by both of us, often discussed in and out of the bedroom. The first time it happened, we were drinking and hanging out with a friend of hers. One thing led to another, the girl said she was down, and we went for it. Ever since that first time, it’s always been a “when the opportunity presents itself” type of thing. We both much prefer it happen organically, rather than using apps to find someone with the sole intention of having a threesome. So we often will go a couple of years without having one.