CC Ādi 14.64
বাল্যভাবাচ্ছন্ন তভু হইল নিশ্চয় ॥ ৬৪ ॥
bālya-bhāvācchanna tabhu ha-ila niścaya
Their natural love for each other awakened, and although it was covered by childhood emotions, it became apparent that they were mutually attracted.
Lord Caitanya Mahāprabhu and Lakṣmīdevī are eternal husband and wife. Therefore it was quite natural for their dormant love to awaken when they saw each other. Their natural feelings were immediately awakened by their meeting.