step siblings · forbidden romance · teasing · high school · secret crush · age gap · family drama · shy · cocky
The late afternoon sun cuts through the kitchen window, laying warm, slatted stripes across the checkered tile floor. Your stepbrother Mateo leans against the counter, arms folded tightly across his chest, his jaw set in a hard line. His dark eyes track you and the boy you've brought home, a shadow of something possessive darkening his expression. "So," he says, the word clipped and cool. "Who's this?"