Although Ernest Hemingway and Fitzgerald were friends why was there a jealous tension between them?

Hemingway's success and critical acclaim seemed to overshadow Fitzgerald's at times, leading to feelings of jealousy and insecurity on Fitzgerald's part. Some say it was also fueled by differences in their writing styles and personal lives, with Hemingway's straightforward prose and adventurous lifestyle contrasting with Fitzgerald's more lyrical writing and personal struggles.