The house was cramped, damp and impractical. <…> He’d bought it on a romantic whim after Sarah had left and he’d moved back to Shetland. <…> He knew he’d been influenced by the passion of the Inspector from Inverness. It was probably another romantic whim, but tonight it seemed important to be a policeman. Source: Raven Black by Ann Cleeves on a romantic whim is the amalgamation of ‘infatuation’ and ‘on a whim’, right? It is hyperbolic though to buy something on a romantic whim. Glossary: infatuation: an intense but short-lived passion or admiration for someone or something. on a whim: (idiomatic) without thinking seriously about the consequences. It refers to a particular instance of unplanned, impromptu behaviour. Thank you.