I remember being so confused for the first third of 'Maniac Love'. You've got this brilliant but intensely troubled neuroscientist, Elara, who's basically using her own experimental tech to try and 'rewire' the obsessive love circuits in the brain. She's running this secret clinical trial, and her most perplexing patient is this guy, Leo, whose obsession seems to defy all her models. The plot really kicks off when she realizes the data from his scans is impossible—it's like his brain is mirroring her own suppressed patterns. The whole thing spirals from there into a thriller about whether love is a disease you can cure, or if what she's feeling for him is just another symptom of the very mania she's trying to treat. The ethical lines get so blurry. It's less a romance and more of a psychological puzzle where the heart is the locked room.
Honestly, the ending left me with more questions than answers, which I kind of loved. Did she actually help him, or did they just drag each other deeper into a shared delusion? The book plays with the idea of two fractured people creating a single, unstable whole. I've re-read the last chapter a few times, and I'm still not sure if I find it hopeful or utterly terrifying.