Śrīla Prabhupāda: “[…] The separation of Lord Rāmacandra from Sītā is spiritually understood as vipralambha, which is an activity of the hlādinī potency of the Supreme Personality of Godhead belonging to the śṛṅgāra-rasa, the mellow of conjugal love in the spiritual world. In the spiritual world the Supreme Personality of Godhead has all the dealings of love, displaying the symptoms called sāttvika, sañcārī, vilāpa, mūrcchā and unmāda. Thus when Lord Rāmacandra was separated from Sītā, all these spiritual symptoms were manifested. The Lord is neither impersonal nor impotent. Rather, He is sac-cid-ānanda-vigraha [Bs. 5.1], the eternal form of knowledge and bliss. Thus He has all the symptoms of spiritual bliss.

Feeling separation from one’s beloved is also an item of spiritual bliss. As explained by Śrīla Svarūpa Dāmodara Gosvāmī, rādhā-kṛṣṇa-praṇaya-vikṛtir hlādinī-śaktiḥ: the dealings of love between Rādhā and Kṛṣṇa are displayed as the pleasure potency of the Lord. The Lord is the original source of all pleasure, the reservoir of all pleasure. Lord Rāmacandra, therefore, manifested the truth both spiritually and materially. Materially those who are attached to women suffer, but spiritually when there are feelings of separation between the Lord and His pleasure potency the spiritual bliss of the Lord increases.[…]”

(Śrīmad-Bhāgavatam 9.10.11 » Purport | 1977 Edition)