Desi shy wife

Hi.. I am IT professional in late 30s. Because of my job, I used to travel a lot to other countries.

I am happily married. As I keep travelling frequently, I miss out sex life with my beautiful wife. My wife is in early 30s, very sexy and shy.

Thought about posting my fantasy about my wife. I have a fantasy imagining my wife with other man and love to watch. It is a very big turn on for me imagining my wife with other men.

Told about it to my wife during bed and while making her cum, she is not into that idea. As it is very big turn on, I keep talking about it with my wife during foreplay and she just keeps listening.

I tried many ways to make her talk dirty around that topic but she is not into it yet. Hope she starts enjoying my fantasy and start talking dirty about other guys with me.

Not sure how to convince her.