In your post you haven't listed a single negative thing this man is doing outside of having a progressive view on weddings. You can ask any number of married men and women whether 10-15 years later butterflies still exist daily. He seems like a relatively nice guy, you seem to be set on a wedding, he seems to be okay with marriage but thinks a wedding is a public display for what he thinks should be private.

Neither of you are in the wrong for having a preference, but I doubt he would break up with you for making an off handed comment, whereas that seems to be your logical go to. Hence the large amount of comments disagreeing with you.