There is no publicly available information about an alternate ending to Colleen Hoover's novel It Ends With Us. The book ends with Lily making the difficult decision to leave Ryle, despite their love for each other, and choosing to prioritize her own safety and well-being.
While many readers have speculated about potential alternate endings, the author has not shared any alternative versions of the story.
It's important to note that authors often explore different endings during the writing process, but these alternate versions rarely see the light of day.