Maybe I'm a cynic, but I tend to distrust books that advertise a singular 'fall in love with him' moment. It feels like a marketing gimmick for a type of reader who wants that single, explosive click. I prefer the slow accumulation of details that sneak up on you, the kind that makes you realize the feeling's been there for fifty pages and you just named it. One that destroyed me was in 'The Flatshare' by Beth O'Leary. It wasn't a grand gesture. It was Leon leaving post-it notes about his sick brother, this quiet vulnerability seeping through his usually terse communication. The moment Tiff realized she could read his worry in the way he wrote 'milk' was the moment I, as the reader, fell. It's the domestic, unobserved kindness that gets me, not the orchestrated balcony scene.
Authors who are good at this build a foundation of mundane respect before the lightning strike. You see him handle a crying child in a grocery store, or witness his exhausted integrity during a work crisis when no one's looking. By the time the narrative highlights it as a 'moment,' you're already invested. The real skill is making the reader's realization sync with the character's, not just pointing at a handsome dude saving a kitten and yelling 'LOVE HIM NOW.' The fallout from those quiet moments is always more believable, too.