Seeking benevolence will lead to benevolence. I really have endless life, and I don't think sacrificing you is wrong. In order to live forever, I think it doesn't matter whether there is love or not.
So if you don't come, I won't grow old.
If I love you, will I be happy if my time moves again?
Author's defense:
I think eternal life can be divided into two types according to its objects, one is human immortality and the other is non-human immortality.
A person who cultivates immortality has eternal life, he can do what he wants, and he has the ability to change.
As for humans, can giving a person a long life really change her destiny?
What I wrote is the story of a person who seeks eternal life and obtains it.
Her long life has allowed her to experience more things, even more bad things than good things, but this is her way. She wants to live, even if she lives like a sewer rat.
Eternal life inevitably involves feelings, and these unplaceable feelings and long-term fear are her price.
Therefore, for the protagonist, if love does not come, she will not grow old.