Lyric discussion by davidd 

Cover art for Let Me Know lyrics by Yeah Yeah Yeahs

I think the meaning is quite obvious: it's a love song and I would think that Karen O is singing about how she loves this one person and how he's no longer there, and the lyrics in the song could explain the rest. This is a love song that I actually like and it's wonderful. I love the first part, I really liked the figurative language:

I couldn't see I couldn't hear Shut me off when you were near Like a cloud A dusty mirror Disappear, you disappear

Although there's one part I don't quite understand: "We counted every minute left to go" They counted every minute... 'til they get married? I don't have a clue.