God made 2 ways to allow man to evolve.
Man can walk the positive way (having, realizing, bringing into existence/reality something, etc.) or the negative way (not having, being deprived, etc.). There is no connotation of good and evil here.
One can know true love because he finds his/her perfect mate. But he/she can also know it through not finding the special one, i.e. through the lack.
The positive way is the easy way. It is so easy to have something that we never appreciate it fully.
The negative way is the deep way. We appreciate every minimal detail, because we know it through its lack. Here comes idealization, respect, lot of feelings, etc.
Example: the rich does not even realize the value of money. He keeps spending from inertia and feeling bored. He has everything that could make him happy, but still he is unhappy. The easy way of having something does not always mean that you will realize what you have. We know from the Bible that God gives this easy life to the people who cannot be corrected and have no place in the World to Come. They receive this gift now, because later there will be nothing for them.
The (real) pauper, instead, knows the value of money, more than the rich person. He could be a very good administrator, if he had a chance. For this reason, God has a special regard of the poor. He is teaching him a very deep lesson.
Did you ever hear the story of the pauper and the prince? The prince found her at the gate of the castle, asking for alms. He took his big golden necklace and put it in the hands of the pauper. That was the greatest gift that the pauper ever received, which filled her heart with a very big emotion. To his big surprise, the pauper died in front of his eyes. He wondered how come that a pauper, who was used to suffer every sort of anguish and resisted to everything, could die so easily for a happiness. That single moment of happiness was more than a lifetime of suffering. This gives the measure of the way of the "not".
However, the human brain is programmed just for positive thinking. So... we all strive to have, whatever it is. So, the way of the "not" is just for the few who can consciously take it. For all the others, it is just the way of suffering.
It is curious that the Hebrew word for "Infinite" is En Sof. It's 2 words. En literally means "nothingness", but they translate it as "infinite". Sof literally means "bottom". But they translate it as "without bottom". So, it should be literally "a bottom of nothingness", or "no bottom", but it would be translated as "infinite without bottom". Who would want to hear that God is the Not?
Indeed, if you think it well, you cannot define God for what He "is" (the list would never end if you have to include everything). But you can say what He "is not" (not evil, not dirty, etc.) in a finite way. And you can see that He "hides" (stays in the "not" knowledgeability) from the human beings. If He wanted to be known and be reachable directly in a physical place or a physical representation, the positive way would have worked.
So it is for the godly love. You are taken by it, but you cannot understand where it comes from, where it goes, how it will be. You only feel it.
If you find a person that lets you feel like this... guarding his/her secret but letting you feel the love, then (if you are not being cheated, because there are many persons who indeed try to trick, and you confuse a genuine feeling with a bored person that gives random signals but has no real committment) you can do the same and show your presence. Until new worlds will be created and nothingness will be brought into actuality (the unmanifested will become manifested).
"The real opposite of love is not hate, but indifference" (Rabbi Adin Steinsaltz)
