@Yabaibunni if you didn't sleep for three 3 days you go insane, imagine what like an entire life with no sleep will do. I don't think it has to do something with his interest in her, at least not at first. But more with the fact she would be the only person to let him rest. He is probably insane...
I saw someone say it would have been more impactful if we didn't know it was a misdiagnosis, but like for me it would have felt like such an half assed excuse why main characters would end up together. I kind of also like the irony in them bonding and being sad about her death, while the other...