We know your habits and ways very well; if what you show to the rival is kindness, then what does cruelty even look like?

This sher carries a delightful edge of gentle sarcasm and knowing intimacy. The lover playfully hints that they see right through the beloved's contradictory nature and unpredictable ways. If the cold or puzzling treatment meted out to the rival is what passes for 'kindness', then true cruelty must be truly unimaginable—or perhaps, the beloved's grace is itself a dangerous torment.