Śrī Caitanya Caritamrta · Text Antya 5.20
সেব্য-বুদ্ধি আরোপিয়া করেন সেবন ।
স্বাভাবিক দাসীভাব করেন আরোপণ ॥ ২০ ॥
sevya-buddhi āropiyā karena sevana
svābhāvika dāsī-bhāva karena āropaṇa
Śrīla Rāmānanda Rāya used to act in that way because he thought of himself in his original position as a maidservant of the gopīs. Thus although externally he appeared to be a man, internally, in his original spiritual position, he considered himself a maidservant and considered the two girls gopīs.
Read Śrīla Prabhupāda's purport on Vedabase.io