(Not really a spoiler but---)

The dead boyfriend is literally on her phone communicating with her. I thought the boyfriend would magically possess another person's body and be with the MC. But no, He just upgraded from an AI communicating app to a freakin' advanced humanistic robot that looks exactly like him༼⁠;⁠´⁠༎ຶ⁠ ⁠۝ ⁠༎ຶ⁠༽

I didn't even know that the world building was that advanced *cry* Oh well, I guess this is what I get for not reading the tags and going straight for the story ༎ຶ⁠‿⁠༎ຶ

And I feel so sorry for Pei Song, I thought he would be the endgame since the dead boyfriend can't be magically brought to life. But boy was I so wrong. No hate for the FL though cuz if I also have that kind of love like her, I would also never find anyone else since the dead boyfriend was already her everything. But still, I would give pity to Pei Song since her standard already exceeded from a normal level. Cuz if I also discovered that what was communicating with was not an AI but her literal deceased boyfriend through the phone, heck I would have already proposed the second time even if he didn't have a physical human form because that is pure love and dedication my friend. So in the end, I guess it's more of a bittersweet ending rather than a happy one.