Originally Posted by Martha

LOL maybe he has alot of jealousy towards Harry. Maybe Dudley's worst fear is that his parents will like Harry more and start to treat him more like they treat Harry. I don't know, that's a good question. Maybe it will come up in later books. I don't know of any bad memories of Dudley's that are mentioned in any of the books. Again, it could be the jealousy thing--maybe as a child he felt threatened by Harry somehow.