Ah, I think they (men) are just clueless once they say "I do". Real life hits, zoning out, working on things. You are no longer a goal, but a day to day reality. Men are pretty easy to keep happy - food, sex, companionship. Women, well we are way more complicated and want all this conversation and stuff. Once you have kids it will get worse.
18 yrs and counting here. I don't mean any of the above to sound negative. I don't think it is, although for women I think we miss the special conversations. I'm sure men miss our early relationship flirting and seduction. It is a balancing act, a giving and taking. And even though you are best friends and have been together for years, sometimes telling each other what you want and need is very necessary. We really don't read each others minds, we just learn to anticipate. The same way the cat knows it is feeding time. They just anticipate your movements. A spouse is the same way, but like the cat when you open tuna instead of cat food, they get confused.