He is an exponential function.
Small rate of change at the beginning,
But he grows fast when he reaches a certain age.
    
I am a function of a straight line.
A big constant ***** since the beginning,
But I also have a y-intercept way bigger than zero.
    
Let our age be the inputs,
And our maturity be the outputs.
At year zero,
We didn’t know each other.
We didn’t know we would cross each other one day.
      
We have been working so hard.
We have been living in different countries.
We were like two parallel lines,
Which would never meet each other.
    
But at year 20 for me,
And at year 30 for him,
We finally crossed each other,
And we were smart enough to find our intersection.
      
We are still growing into different directions,
Because that probably will be our only intersection.
But we only need that one intersection,
Because we are all independent now.
We don’t need other people to input data anymore.