Maybe its best to start talking about where you go from here. How is he going to handle the next woman who appeals to his ego? This will happen. You are both young and there is so much ahead of you. I urge you to get it right from here on in.
Perhaps get into MC, set up some boundaries. Do you know what your Wants/Needs (deal breakers)/Values are? I have to say, I had no clue what all of my H's were until we did this exercise this past year. And we are 15 years in!
I wish you well!