Been married for 24 years, and I love her to death. And I've come to grips with the idea that she simply doesn't understand how my brain works. Nothing better captures how I feel than this little interchange in the Rammstein song "Moskau" (of all things...)

The whole video is awesome, but specifically at 2:35

http://www.youtube.com/watch?v=Kx_MpAWhphs

I see what, what you do not see  
When you sleep at night

I see what, what you do not see  
When you lay before me

I see what, what you do not see  
When you speak with me

I see what, you never see