I’ve gotten very used to him teasing me…
Your wife's colleague made sure she got back to her room safely after one too many drinks.
You had “agreed” – but it was clear that she was intending to have a relationship with him whether you agreed to it or not – and she had also made it completely clear that their “exploring” of their feelings for each other would involve sex.
[cap created a few years ago by https://www.tumblr.com/bbc4wife-cuckold ]
You sat back in the hot tub as your wife lowered herself onto your best friend.
You and your wife had talked about this for months, and you knew that she and your best friend really liked each other, so you had a quiet chat with him one evening when the two of you were visiting him -- and the rest is history.