Whenever Shri Nathji gave examples of the lover and the beloved–like those of Yusuf and Zulekha, or Laila and Majnu, or Shereen and Farhaad, he would be referring to Divine Love.
It was God that put the divine beauty into Laila, which attracted the heart of Majnu, he would say.
The difference between ordinary love and divine love is that ordinary love takes one to a consciousness of the body and the senses, while divine love takes one above such a consciousness. Ordinary love is physical in nature, divine love transcends the physical. It is spiritual in nature. It is like the love between Radha and Krishna.
Shri Nathji would give the following definition of a genuine lover:
Aashikee raa shash nishaan baashad ai pissar
Aahe sardo rang zardo chashm tar
Gar turaa pursand cheh deegar kudaam
Kam khuro, kam guftano guftam haraam.
There are six signs of Love, O Son!
Cold sighs, a paleness of the face
And eyes wet with tears;
And if thou ask for the other three–
These are, a giving up of food and talk,
And a giving up of sleep!