A co-worker's husband offered up this fantastic piece of advice that Groom has whole-heartedly embraced. During the wedding planning, never say "I don't care." Instead, say "I agree." Even though I would really like Groom's input on these questions, now I giggle when he says this, instead of getting mad at him. Mostly its because I'm asking open-ended questions.
"Do you like these colors for the wedding?"
I'm quite certain this will be useful later when I'm insane, and his lack of concern for the chair covers makes me believe he doesn't care about our wedding or our future, or our...[insert freakout topic here].