The author concluded her hugely successful series of books about the boy wizard with his best friends Hermione Granger and Ron Weasley married - which upset many fans who thought Harry should have got with Hermione - and now she's not sure if that was the right decision.
She told Wonderland magazine: ''For reasons that have very little to do with literature and far more to do with me clinging to the plot as I first imagined it, Hermione ended up with Ron.
''I know, I'm sorry, I can hear the rage and fury it might cause some fans, but if I'm absolutely honest, distance has given me perspective on that. It was a choice I made for very personal reasons, not for reasons of credibility.
''Am I breaking people's hearts by saying this? I hope not.''
The 'Harry Potter' novels were made into a hugely successful series of films starring Daniel Radcliffe as the boy Wizard, Rupert Grint as Ron and Emma Watson as Hermione, and the latter echoes Rowling's thoughts.
She said: ''I think there are fans out there who know that too and who wonder whether Ron would have really been able to make her happy.''
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