Meant to upvote
[theory + spoilers if you haven't read]
hmm more than ''be loved'' I think its ''be happy''. in the 2nd timeline (I think) were she left with the white haired guy, he said constantly he hated her, but he did want her to have human reactions, and when she died he was preeetty upset, so I do think he loved her but was really frustrated by her putting up with whatever he did.
it could also be that if she doesn't live, there won't be a descendant with the power or some bs like that, so she'd be forced to live on in whatever conditions. but what I said above seems more likely.
On another note I'm pretty excited to know how the ML would react to her wish. she's seeked almost everyone's help at some point, but not his (yet), and he was the one to kill her before (quite reasonable for him in that situation). With his personality, I think he would be pretty upset she didn't seek his help before and would be pretty sad for her, more than anyone ever has, just bc he's not trash.
White haired dude did not love her. He loves to manipulate people/control them. So, you can’t say that the requirement of being loved was met by that bastard. Plus, he was only upset that she died because he needed a baby making womb with high powers. Yeet
THAT'S PRETTY AMAZINGGG
Maybe she's tired. And look. What if the reason she wasn't able to die is because she's not able to receive love? And the only way for her to die eternally was to love and to be loved. (of course they will stay alive but I mean when they are about to die. Do u get me? Huhu) so when she found love, and she received love. The feeling is there. The moment. The heartbeat. Everything is there. So yeah. Receiving love is the thing she doesn't have and didn't experienced in her past life. I hope you understand hehe.