忽冷忽热若即若离既而渐近渐行渐远
[hū lĕng hū rè ruò jí ruò lí jì ér jiàn jìn jiàn xíng jiàn yuăn]
This describes an emotional state that is unpredictable and changeable. The phrase suggests relationships or feelings that shift between close and distant, warm and cold, and ultimately grow farther apart over time.