CC Ādi 14.64

sāhajika prīti duṅhāra karila udaya
bālya-bhāvācchanna tabhu ha-ila niścaya
Word for word: 
sāhajika — natural; prīti — affection; duṅhāra — both of them; karila — made; udaya — appearance; bālya — childhood; bhāva-ācchanna — covered by emotion; tabhu — still; ha-ila — it so became; niścaya — fixed up.
Translation: 
Their natural love for each other awakened, and although it was covered by childhood emotions, it became apparent that they were mutually attracted.
Purport: 

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.