To be fair, I'm only about 60 pages into this book, but this trope is making it very hard to get into:
We are introduced to the hero, who is 200 yrs old but well preserved and urbane.
He meets a 20 yr old who is the spitting image of a former unrequited love so, naturally, beautiful, delicate, and feisty (in order of importance to him).
They spend two days together because... It's a plot point I guess.
Then she changes her mind about a major life altering decision because now she loves him.
After two days, with no showing or even much telling.
Now that is lazy writing. I can only hope the story is why this book is considered a sci fi classic, cuz it's not character development.