I dont understand

If I understood love, it would feel like her little hand in mine, on the lazy days of summer;  
  It would look like the stardust green of his eyes every time the light catches them at just the right angle;  
  it would smell like her hair after playing in hay and fire pits on nights filled with golden sunsets;  
 It would sound like his laughter after he tells a joke only he understands;  
 And it would taste like the grape he steals from my plate when he thinks I’m not looking.  
 ***  
If I understood hurt, it would look like disappointment written across a face too young to register the sting of rejection;  
 it would feel like a tear soaked sleeve after holding her while she cries about a mother she doesn’t know;  
 it would taste like bile produced from the stress of having to deliver news that will devastate a tender heart;  
 It would smell like cookie dough ice cream at 10 pm because we stayed up an extra hour to see if they would call like they said they would;  
 And it would sound like the screams of ” I hate you” while swimming on a day where everything is too perfect for her to feel comfortable.  
 ***  
But I don’t understand, I don’t understand anything, not life, not love and certainly not pain.