Hey Mr Sazabi!

Often in our relationships, even with our best friends we find it difficult to be open when it comes to sexual fantasies and desires. We will talk about other needs but will let the buck fall short in these very important areas.
What will our partners think? Will they worry that my thoughts are "strange" or not "normal"? Etc.
We all have these thoughts yet we somehow assume that our partners don't. That they don't have fantasies like ours or even other fantasies.
Like Alexia said...have you spoken to your spouse about some of your fantasies? Or the wonderful little trick that Master Baron suggested.
Start small...ask her what some of her fantasies are and work with her on making those a reality. Then start slow with yours.
It takes time to learn how to be open about something society deems as "taboo" but it's not worth your sexuality suffering or your marriage for that matter.
Good luck!