Not sure about the Ron and Hermione relationship though. I always thought Hermione would end up with Harry as she was always loyal to him and stuck by him even when other people didn't, but some people said she wasn't paired with Harry in the books because they were both Muggle-raised and Harry saw her as a sister. Ron is funny but he comes across as an immature git sometimes. I guess Hermione was right when she said he had the emotional range of a teaspoon
I know that some people wanted Harry and Hermione to be together but personally I never saw anything at all in their relationship that was anything other than a brother / sister type bond.