I think that chorus 1 is confirmed with “talking with nothing to say” in the end. He knows that they’re drifting apart from one another in the relationship.
[Verse 1]
Sometimes I get to thinking
About the times we used to have
But now you've gone away and left me so alone
La-di-da, la-di-da-da, la-di-da
Although my back is aching
I'll work the whole day through
Although you hear that I've been wasting all my time
[Chorus 1]
Taking the sun from the sky
Lifting our hearts to the day
Thinking of new revelations
Talking with nothing to say
[Verse 2]
Sometimes I get to thinking
About the times we used to have
But now you've gone away and left me so alone
La-di-da, la-di-da-da, la-di-da
Although my back is aching
I'll work the whole day through
Although you hear that I've been wasting all my time
[Chorus 2]
Taking the sun from the sky
Lifting our hearts to the day
Thinking of new revelations
Talking with nothing to say
Sometimes was written by Danny Kirwan.
Sometimes was produced by Fleetwood Mac.
Fleetwood Mac released Sometimes on Fri Sep 03 1971.