We know that Dudley meets up with Harry sometimes for the sake of their kids, let’s be honest they practically grew up brothers even if they did not get on. So my theory which was the reason I started this post is out the window before I even start, my theory was they got their memories wiped since it is doubtful that Harry would visit them. Oh well.
What do you think happened to them? Did they move back to Privet Drive, or go somewhere new and start again? Other than Dudley did they ever see Harry again? Do they still hate magic? Or has at least Dudley realised that Harry is not the enemy?
I like to think they softened a little towards him and saw him every few years at least. What do you think?