This is a lovely portrait of both characters -- I like that there's a very clear conflict/resolution, even in such a short piece, and it gives us a great sense of Dave's voice and temperament. I also get a feel for Simone through his eyes, though it's still a little bit hard for me to interpret her as a full person and not just as the object of his desire. What I mean is, I do see in this piece that she is a lovely, mysterious, passionate woman who is unobtainable, skittish, serious, and sometimes coy, with an inner fire and determination; but I feel like I don't know what makes her unique from other mysterious, exotic, passionate, unobtainable women; what makes her so specifically Simone. I'm not sure what would bring her into clearer focus for me, but I do feel like Dave is more of a unique individual here than she is. (The strongest moments to me were when she said she would "paint this one fish," and "he is like the moon;" and also when Dave twirled her; but I see strong shades of *you* in those moments, maybe more so than Simone. Plus, Dave just mangled his dancing attempt; would he lead her in a dance move again so soon?)

I love your environmental descriptions. The background of the chestnut trees in full leaf, and periwinkle skies, the bats and the snowy chestnut petals and the descriptions of the Estanque... all very nice and vivid and immediate. And, of course, seeing through Dave's eyes is just beautiful; he's such a poetic soul. The metaphor of the fox is all too apt, and he expresses it well.

A few little things, for possible editing:
* I think the streetlights would have been incandescent; that is, 'normal' electricity. Sodium lamps weren't really around until the '70s, I think. So the light would have been white or yellowish and 'true to color.'
*"pleasure," not "pleasantry," which is a polite or joking remark to lighten the mood or ease conversation.
* "She understands feelings and things that she can sense." --> a bit repetitive, maybe just "She understands things that she can feel."
* "for words that don't fit my mot juste of her" confused me the first few times I read it -- it sounds like he's trying to add words to an already-existing mot juste rather than seeking that mot juste itself; maybe try to reword that idea a bit. I really liked the thought, once I understood it!
* "her dark hair flies for a moment in the wind, theN lays against her cheeks." Get that N in there! (also, maaaybe shake up the "again" "against" "again" in this paragraph.)
* I adore everything from "I want to ask her..." to "To share." It's just so precise in conveying how he feels. That little imagined conversation, and its imagined aftermath, is the strongest glimpse I have of Simone, as well.
* "if it is lavender or blue" and "I am right here with you" seem like they should be contractions because they're so conversational; the second even being spoken aloud.
* I love his moment of seeing the 1001 nights and silk roads in her dark eyes. Man, he's one lovesick puppy.
* Not sure about "dewy" eyes, as that implies innocent and naive and childlike, sort of more childlike than I imagine Simone to be.
* As for that cask of amontillado, they don't drink it in the story, either, which makes me wonder if he'd reference it a little differently, maybe mentioning being sealed up in a wall.
* Same with the "discretion is the better part of valor;" he'd know its original context and it's really not a flattering comparison to make with oneself (Falstaff being a big chicken who runs out on his friends to go hide in battle), plus it's contradictory in the face of his earlier "we never get anywhere by being afraid" thought. You could try to rephrase it in a way that's more closely related to the fox/hunter/tamer metaphor.
* I love that moment of him trying to breathe in unison with her, with his face buried in her hair.
* "swishes 'round and 'round" doesn't need the apostrophes.
* I love the simplicity with which you wrote his anxiety evaporating in the last few lines of the piece. It feels just right.

And that is that! Good luck and <3s for your story.