Tantra yogas use emotion and other drives to transmute these experiences for spiritual purposes, such as realization of the divine energy within, God, the Life Force uncovered by consciousness.
The combination of devotional and sexual yearning for another, especially if the other positively responds, but physical sex is not consummated, can lead to such great experiences of love, that it is recognized as being part of one's own true nature. The mind and emotions are powerfully focused on love and love is experienced to be one's own character. The other just brought it forth by their own loving.
This is the subject of our May 21, 2017 Satsang with link below: