No that's what the intellect says.  That's what observation of our physical nature says.

We can look at our genitalia and see complementarity, the organs of unity and creativity. 

We can look and examine the cells involved in union and see unity and creativity.

We can look at the genes involved in union and see unity and creativity. 

We can even look at systemic effects within the body of the woman and see how union during the fertile period is ADVANCED by the immunology of the woman; her immune system doesn't treat the sperm as foreign matter. 

In other words, even after the "organs" unite, there is a further uniting at the cellular level and at the genetic level, aided by a specific action in the immune system. 

This work of observing and hypothesizing and drawing conclusions is the work of the intellect, not emotion.  

One only need to read your last paragraph to see who is overworking their emotional side.