他是炎日深拥必伤她是深海久溺必亡
[tā shì yán rì shēn yōng bì shāng tā shì shēn hăi jiŭ nì bì wáng]
He is like 'a scorching sun embracing deeply bound to hurt'; she is like 'an ocean depths sinking fatally destined to die.' The phrase evocatively uses elemental metaphors to compare romantic relationships that have destructive qualities, indicating intense passion intertwined with inevitability leading towards harm or perishing, suggesting that both parties may be harmed through close entanglement or too much immersion within a dangerous affair or relationship.