Been lucky enough to have experienced the first 6 of your list, since our first mmf back in 2013, she was 38 I was 48, we not as active these days, life catches up with you, not a clue what cuckolding was, just wanted her to experience 2 men pleasuring her, our first wasn’t what we expected, due to nerves and drink, but it wasn’t that bad it put us off, she had been worried it would change our relationship, that I wouldn’t feel the same towards her, the opposite occurred, I was more attentive she said, I encouraged her to let herself go, we were both like kids in a candy shop, and the dynamics changed as her confidence grew, I loved it, we pushed boundaries together and shared everything even if I wasn’t there.