Staying with D H Lawrence, how about this simple blissful poem written by him? It starts off nice and calm and romantic, a happy poem. And then, the entire mood of the poem changed by one single last line. Masterful! What a poet!!!
The little river twittering in the twilight,
The wan, wondering look of the pale sky,
This is almost bliss.
And everything shut up and gone to sleep,
All the troubles and anxieties and pain
Gone under the twilight.
Only the twilight now, and the soft "Sh!" of the river
That will last for ever.
And at last I know my love for you is here;
I can see it all, it is whole like the twilight,
It is large, so large, I could not see it before,
Because of the little lights and flickers and interruptions,
Troubles, anxieties and pains.
You are the call and I am the answer,
You are the wish, and I the fulfilment,
You are the night, and I the day.
What else - it is perfect enough.
It is perfectly complete,
You and I,
Strange, how we suffer in spite of this.
- D H Lawrence