Sir Walter Raleigh (1552 – 1618), an English adventurer and writer, who was knighted in 1585 was not considered a good poet. However, I feel he has described LOVE the best way. 

He writes - 

“But true love is a durable fire,
In the mind ever burning,
Never sick, never old, never dead,
From itself never turning,”

Today while reading the above lines, noted in my diary some three decades back, I was reminded of Bhagavad Gita’s one shlok which says - 

न जायते म्रियते वा कदाचि-
न्नायं भूत्वा भविता वा न भूयः ।
अजो नित्यः शाश्वतोऽयं पुराणो
न हन्यते हन्यमाने शरीरे ॥ 

na jāyate mriyate vā kadācin
nāyaṁ bhūtvā bhavitā vā na bhūyaḥ
ajo nityaḥ śāśvato ’yaṁ purāṇo
na hanyate hanyamāne śarīre

(For the soul there is neither birth nor death at any time. He has not come into being, does not come into being, and will not come into being. He is unborn, eternal, ever-existing and primeval. He is not slain when the body is slain.)

I fully agree with Sir Walter Raleigh. 

Love is like soul. 

Love is like drug and that’s the reason we can’t get enough.