Quote on Love: A Cryptogram

In this puzzle, letters have been replaced with numbers. Use your detection skills to identify patterns and determine which letters are represented by which numbers. Test your theories by typing the numbers into the corresponding boxes. Made a mistake? Simply remove the number, and the puzzle will update accordingly.

Once you've entered all the numbers into the code, you will reveal a quote about love from one of Christie's greatest mysteries, Death on the Nile.

N.B. This puzzle works better when solved on a tablet or desktop