Denial can make great truth’s go through a good person's eyesight and be ignored by a bad person's conscience. Fitzgerald and Hemmingway posessed both these kinds of denial as they were a teetering breed lost within the grey area of life.
It seems that Hemmingway’s Lady Bret opened a back door to monogamy exposing the changing the way women were starting to think and act while also giving men a run for their money. In all her glory, though, Lady Bret also, in my opinion, helped perpetuate the jealousy factor in men that can often start wars of varing levels. Not that men weren't jealous before the roaring age of drunkenness and loose morals, but now that women were making their desires more known and fraternizing with many men as opposed to only one men’s jealous tendencies were exponetially growing. Fitzgerald and Hemmingway fell into this tendency in stellar form. They had to have her and they did not give care nor thought to how they individually acted to get her, she was a prize and a conquest. They were Napolean over anyone they saught. Lady Bret was a character posed of the women Hemmingway was after and what they were like to his understanding. For Fitzgerald Daisy was his poison and she embodied exactly how he saw his Zelda as well as his fickle flame that was fame itself. They both saw women as welders of a power they were not fit to have but the fact that they had it gave a whole new way to frame their grey denial of what life really was with women in it.
In retrospect had the character of Lady Bret only desired to sleep with one man at a time and Hemmingway didn’t see women acting with flighty indecision quite possibly he would have sculpted his image of women differently. Therefore allowing women in reality to have gotten further faster in society because men wouldn't have felt so emasculated. As men are of a dominence mindset which means when someone they are sleeping with sleeps with more than one man they each tend to get a bit cranky that they are not the only one.
So when they're not out stulking, or crying (though they never cry, lol), or trying to be everywhere they think you'll be just so they can be like "oh no, I shop here all the time" while our eyes are rolling and we walk away, they're plotting ways to get attention, whether its with roses, or songs, or bombs and guns, because lets face it apparently aloof behavior is the trigger for psychosis.
Hemingway and Fitzgerald were pawns of this psychosis, hence is why they drank to numb the pain. Hemingway in a more Bret Ashley way and Fitzgerald in a fame was his lady, because we all know he was with Zelda, but fame was his fickel flighty fiesty lady. Fitzgerald gave fame his heart, as he knew Zelda would get him there and all that glitz and glam was all he ever wanted. Zelda couldn't compete and she made herself sick trying.
Hemingway on the other hand had, in my opinion and up and down relationship with women, he saw them as he saw his mother, at times great and at times not. He saw them as the ones to blame and also the ones to fix all wounds.
Both men seemed to capture women as they were in that day, indecisive on whether they wanted all the freedom or they wanted the security. It was a toss up based on mood.
By the way I personally loved DiCaprio's Gatsby, it was new modern and fresh, different from the book in some ways but worth the watch. Also if you dig 1920's Fitgerald-esk stuff Christina Ricci stars in an Amazon Prime series about how Zelda and Scott hooked up, really great intrepretation of the book Z for Zelda by Therese Anne Fowler.