My girlfriend, before I was married, love it when I would cum on her face and breasts, or in her mouth while I watched. It was never in a demeaning or machivo manner, it was always just a fun dirty thing we did once in a while. This really turned me on more than anything. My wife is a little more conservative. She does let me cum in her mouth during oral sex and I also pull out on her stomach, but I like to watch and take it a step further. I have mentioned it to her is the past and she said its fine as long as it doesn’t get in her eyes which is cool. However, I don't know what the best way to go about it would be so she is not surprised and so she can be comfortable with it. If you could please let me know I would appreciate it thanks.