Prema Bhakti !

...Love for Krishna which is extremely concentrated, which completely melts the heart, and which gives rise to a deep sense of mamata or possessiveness in relation to the Lord (this is the general definition of prema given in Bhakti-rasamrta-sindhu, 1.4.1).

....When rati becomes firmly rooted and unchecked by any obstacle it is known as prema. When some cause arises that could conceivably ruin the relationship between the lover and beloved and yet their bond remains completely unaffected, such an intimate loving relationship is known as prema. When prema is augmented, it is gradually transformed into sneha, mana, pranaya, raga, anuraga, and bhava. (Ujjvala-nilamani, 14. 59, 63)...