Some scars don't fade. Some people don't know how to accept that. And usually, all they need is someone who loves them, to get them through it. Somewhat mixed between the books and the movies.

After his trip to the forst, Harry reckons there might be another person who deserves to use the ressurection stone before he destroys it. Sequel to 'Back Again'

Harry goes back later in life to find the ressurection stone. And before destroying it, he speaks to someone who deserves more than a few 'thank you's and apologies. After all, without him, defeating Voldemort would have been impossible.