I find the progression from enemies to lovers in their stories tends to follow a pretty standard beat sheet across a lot of fandoms. It usually starts with Gabriel being a smug, untouchable force—whether he's an angel, a CEO, or a vampire elder—and Elizabeth is the one person who sees right through the act and isn't impressed. The initial friction is key; she might outsmart him in some political maneuver or just refuse to back down from a philosophical argument.
A common midpoint involves a forced proximity scenario. They get stuck in a safehouse during a crisis, or have to pose as a couple for a mission. That's where the brittle respect starts to form, often because Gabriel witnesses her competence under pressure. He begins leaving small, thoughtful gestures—a book she mentioned wanting, a perfectly made cup of tea—that show he's listening far more than he lets on.
The real turn happens when one of them gets hurt protecting the other. It flips a switch, moving the dynamic from intellectual sparring to raw, unguarded concern. After that, the stories either dive deep into a slow-burn domesticity where they build a life together, or they lean into the high-stakes power couple trope, ruling whatever realm they're in as a united front. I lean towards the domestic ones, myself; there's something about seeing Gabriel, who's used to commanding legions, utterly flummoxed by helping Elizabeth pick out curtains.