Core Symptom (Anticipatory Fear of Obsession): The patient is currently experiencing a profound, recurring fear regarding her future psychological capacity to handle romantic relationships or marriage. She looks at peers who balance academic goals with healthy relationships, but she feels completely incapable of doing the same.Cognitive Distortion (Negative Belief Loop): The patient is trapped in a fixed belief that if she enters any relationship, she will inevitably become consumed by it. She fears she will lose all control, think about her partner 24/7, become psychologically unstable, and completely destroy her academic focus.The Reality of the Struggle: The patient explicitly notes that despite knowing the logical advice to "stop thinking about it," the sheer intensity of this distress makes it impossible to manage in reality. The anxiety and the resulting physical exhaustion (heart palpitations and fatigue) completely block her ability to concentrate on her studies, leaving her fe