CC Madhya-lila 08.188 - BRS 2.1.230
Sri Caitanya-caritamrta
CC Madhya-lila
CC Madhya 8.188, Translation and Purport:
“"A person who is very cunning and always youthful, expert in joking and without anxiety, and who can keep his girlfriends always subjugated, is called dhīra-lalita."
This verse is from the Bhakti-rasāmṛta-sindhu (2.1.230).