Tl;dr: I get defensive when my fiancé is just trying to think deeper on things or learn more about my views on things.
An issue I've noticed in my (32F) relationship with my fiancé (31M) is that sometimes if he's being inquisitive, I'll take it as him interrogating me and go on the defense.
An example is earlier today, we were talking about wedding stuff and he was talking about friends who recently went on a honeymoon. He was kind of questioning the idea of why people who lived together and traveled together before marriage made a point to go on a honeymoon, and what makes it differ from a regular trip. He was also questioning the purpose of a first look or him not seeing my dress. It's not inherently a weird thing to question, but I took it to mean that he was switching up on me and saying he might not want a honeymoon or that a first look isn't something he wants and I felt like my desires for the wedding were things he was only doing reluctantly, which isn't the case at all (he's just as involved with planning our wedding as I am).
We've talked many times about centering the idea that we're on each other's side over everything, and I don't want him to feel censored when he's just talking and trying to learn. Curiosity is a quality of his in all aspects of his life and I actually like this about him. Any advice for how I can break this pattern?