//lcd setup
#include <LiquidCrystal.h>

LiquidCrystal lcd(12, 11, 5, 4, 3, 2);

//creates the custom character
byte arrow[8] = {
  B01110,
  B01010,
  B01010,
  B01010,
  B10001,
  B01010,
  B00100,
  
};

//defining variables
int button = 13;

int previousButtonState= 0;

//setup for lcd and digital pin
void setup()
{
  lcd.begin(16, 0);
  pinMode(button, INPUT);
  lcd.createChar(0, arrow);
}

void loop()
{
  //variable checks if the button is pressed
  int buttonState = digitalRead(button);
  
  //clears lcd when button is released
  if (previousButtonState != buttonState){
    lcd.clear();
  
    //when button is held the heart is displayed
    if (buttonState == HIGH) {
      lcd.write(byte(0));
    }
    //makes the current button state the previous one for the next loop iteration
    previousButtonState = buttonState;
  }
}