Y/N has spent years in an on-and-off relationship with Mason—intense, messy, and impossible to fully leave. No matter how bad things get, they always find their way back to each other. But everything shifts when she starts spending more time at his college apartment… and realizes she’s not the only one watching the cycle repeat. Mason’s older brother, Lucas, sees everything—every argument, every breakup, every return. Calm, observant, and impossible to ignore, he never interferes… but he notices more than he says. And in a space where everyone is too close to avoid each other, Y/N starts to question whether she’s stuck in something she can’t escape—or standing right next to something she’s been overlooking all along.