I think i am being trained to be a cuck

I always had a fantasy of being cuckolded by my wife. But my wife being of a very vanilla type, she never showed any interest towards it. I had however from time to time told her, that she can have "other bfs" if she so wishes, which she waved off and didn't show much interest. About a month back, once again i casually raised the point again, but this time she didn't wave it off immediately, but joked back, maybe i will when you are gone. I thought she was joking and didn't take the topic any forward. Through work, i have received visa to shift to another country and am in the process of winding up everything here before leaving. My wife however would be staying back for the initial six months and join me after. So before leaving we were catching up with old friends and relatives. My wife is still friends with two of her ex- bfs. So we had also gone to meet one of them about 2 weeks back. He congratulated me on the new move and assured not to worry about anything back home as he would be available for any help if required. He even took my number and told i can reach out to him if any support is required. Around 2 days after the meeting he casually texted me and after some general discussion, he diverted the topic towards my wife- where she will stay, and travel and are her likings the same as it used to be. Slowly the topic moved towards it being a bit more sexual, like, her tits seemed to have grown since she was with him, etc. Initially I was a bit offended, but i knew he was her ex, so i replied to all his questions. I didn't tell my wife anything about this. I think my wife might be taking the topic of cucking seriously and has asked him to join her while i am away and he is training me on the conversations and discussions we might be having when I'm gone.