My wife was adamant she “would never do anything like that “ (exact words), when I told her about a bit of swinging in a past relationship. When I questioned why, she said she would be to jealous to see me with another woman, so I told her I would be ok if she wanted two men to pleasure her. She then thought I was bi, and i assured her I was not, and that I just wanted her to experience it. She was concerned that it would affect our relationship in a negative way, and it wasn’t something we countdowns once it had been done. 18 mths later she took her first BBC, within 3 mths she was enjoying multiple BBC together. It was a combination of watching porn, role playing, toys, talking about how we felt and the concerns a step at a time. It was unexpected when she said one night she wanted to try it just the once but only if the bull was black.