This dragon eats memories

The world’s last dragon survives only by devouring the memories of the one he loves most—forgetting her completely after every meal. A hundred times, Elara has made him fall in love with her all over again through snowy nights, forged identities, and staged meetings just to keep him alive, only to watch him become a stranger every single time. She thought she was trapped in an unbreakable curse, until she uncovers the devastating truth: buried behind all his forgetting lies a cruel secret about herself.