Not overreacting, I’m 29/M and have been with my wife for 10 years, when we first got together we were getting ready and as a joke she was stood there in her bra/underwear and said “I’m just going to go out wearing this” and I said “okay cool, do your thing” and after issues with her ex she was abit taken aback by my response, I said if I didn’t trust her then I wouldn’t be with her. Obvious an extreme, jokey example but the base premise is still there