I can't stop obsessing over this

This is so stupid. I'm so distracted by a fictional scenario, like I can't stop thinking about it and tearing up because I find the idea of it so sad. I keep thinking about an immortal being having one true love, who is a mortal. But the mortal's soul always reincarnates and the immortal has to watch their partner die over and over again, and go on a journey to find where they reincarnated. And like just the immortal slowly breaking down over hundreds and hundreds of years having to watch their partner fade away every time, or maybe not even being able to find their soulmate for a century or something. I just keep thinking about it and I feel so bad for the immortal. But it's not even fucking real, and I want to stop thinking about it. It actively makes me want to cry just thinking about it. UGH.