In any narrative, conflict is the engine of the story. In a medical setting, conflict is constant. When two characters fall in love while managing a mass-casualty event or a rare diagnosis, their bond is forged in a "crucible."
Julian brings in a patient who is a known domestic abuser. Elena has to save his life. The tension arises when Elena remains clinical while Julian struggles with the injustice. This tests their relationship: Can you love someone who compartmentalizes their empathy differently than you? In any narrative, conflict is the engine of the story