CC Ādi 4.162
বিশুদ্ধ নির্মল প্রেম, কভু কহে কাম ॥ ১৬২ ॥
viśuddha nirmala prema, kabhu nahe kāma
The love of the gopīs is called rūḍha-bhāva. It is pure and spotless. It is not at any time lust.
As already explained, the position of the gopīs in their loving dealings with Kṛṣṇa is transcendental. Their emotion is called rūḍha-bhāva. Although it is apparently like mundane sex, one should not confuse it with mundane sexual love, for it is pure and unadulterated love of Godhead.