Catching the Iron Bull in the act (that is, the carnal act) didn't start anything. It just brought Dorian's attention to it.

Or, five times Dorian Pavus and Iron Bull hastened slowly. Scenes from a love story. (Each chapter is a self-contained variation on a theme.)

“Derek,” Cora growls from halfway across the Quidditch pitch, her bat paused mid-air like she’d been about to go for a swing. “What the holy hell is your weirdo Gryffindor boyfriend doing?”