There's a legendary clip from The Newlywed Game where the host asks the wife to share the strangest place she and her husband have made love. The wife replies "in the butt." So, to be clear, when I mention geography, I mean where in the house, not where on the body.
When the spark is still there, sex just happens. You reach for a glass of water and it happens. You ask if this spot on your shirt looks like mustard and it happens. You order food and realize it will be 20 minutes before the delivery guy gets there, and it happens.
Quite often you get it on without being bothered to move to the bedroom. It's not about channeling some inner Mickey Rourke and christening the kitchen table. It's more about "I was grabbing my keys from the mantle, and I remembered that I want you like crazy." As the Cialis Daily commercials say, "Why should you have to wait when the mood strikes you?"
So when sex becomes infrequent and localized, something is definitely afoot.
Say Yes to the Dress is met with no objections
Talking is the first thing to go when a relationship sours, but it's a gradual process. Long before no talking are phases of stripping away conversation that isn't absolutely necessary. Negotiation is a great place to start. Do you know how much time it takes to negotiate? She gives a suggestion, then he gives a suggestion, and then the alternatives. An unhappy guy says things like, "You decide" and "Whatever you want is fine." What his partner perceives as disinterest in the subject is more likely disinterest in the interaction.