Sienna Calloway has spent years building a life controlled by rules: psychology studies, quiet routines, emotional distance. Working evening shifts at St. Claire’s Gym is supposed to be temporary — just another way to pay tuition and survive grad school without needing anyone.Then she meets Zane Cross.Professional MMA fighter. Co-owner of the gym. Walking chaos wrapped in bruised knuckles, tattoos, and a smile dangerous enough to make bad decisions feel reasonable.Zane is used to attention. Used to women falling for the performance. But Sienna looks at him like she sees straight through it — through the charm, the arrogance, the violence he hides behind so easily. And the more she refuses to be impressed by him, the more impossible she becomes to ignore.What begins as sharp arguments and reluctant attraction slowly spirals into something darker: obsession disguised as desire, jealousy disguised as concern, intimacy that feels more like losing control than falling in love.Because some people don’t heal each other.Some people ruin each other beautifully.And once Zane and Sienna cross the line between hate and hunger, there is no clean way back.