This Fitzgerald story certainly reminds me of this passage.
Here is the final passage in "The Sensible Thing"
“Yes,” he whispered into her lips. “There’s all the time in the world…”
All the time in the world–his life and hers. But for an instant as he kissed her he knew that though he search through eternity he could never recapture those lost April hours. He might press her close now till the muscles knotted on his arms–she was something desirable and rare that he had fought for and made his own–but never again an intangible whisper in the dusk, or on the breeze of night…
Well, let it pass, he thought; April is over, April is over. There are all kinds of love in the world, but never the same love twice.
George O'Kelley is in love with Jonquil, a girl from Tennessee (and much like Zelda Sayre from Alabama in FSF's own life). George is an engineer, temporarily working in insurance. Things do not quite work out for them on the first try; George is rather a failure and competing men are lining the porch at Jonquil's house. But he goes off, goes to South America, and wildly succeeds, returning ten months later. They go for a walk in a magnificent garden and it ends with a kiss and the word abpve
(Scott later noted: “Story about Zelda + me. All true.”)