"Therefore, a Man Shall Leave his Father and Mother"

This is a very strange verse, but one of the most famous ones in the opening chapters of Bereishit. 

Because God has cast a stupor on Adam, removed his back (or one of his ribs) to create Eve, therefore, "A man shall leave.... and cling to his wife, and become like one flesh."

The narrative is strange for a number of reasons. Adam is given the immense honor of naming all living creatures, essentially, discovering their essence and giving them names based on that essence. 

When he fails to find a helpmate whose essence resonates that of a kindred soul, a soulmate, then, God, in his infinite mercy brings a deep sleep upon Adam and the rest is history. 

Was the kindness of God to be repaid by Adam, midah c'neged midah, reciprocally, in that Adam would at a later point leave behind parents he never had? There is a paradigm Hashem is implanting here in the relationship between man and wife, the underlying meaning essentially being that no one other than one's soulmate can fulfill the need of man, no animal in the animal kingdom, nor one's parents. But then, how do we learn that from Adam, who never had parents? How can we learn about our individual experience as people striving to cling to our significant others - the joke is that the man has to leave behind his father and mother, because the wife could never do that - when our own experience does not resonate with that of Adam, the first man? He, after all, never encountered that challenge, nor surmounted it. It was not enough for the verse to write that man had to "cling to his wife and become one flesh." Rather, there is a very deep significance to the first part of the verse, I just don't know what it is.