No, you can't! All three of the trio have had their share of tetchiness throughout the books. The author blamed Ron for almost every fight he and Harry ever had, seeming to think that Ron should always have taken responsibility and been more supportive of Harry. Well... it takes two to tango. Harry was often just as stubborn as Ron in refusing to make up. And even though Harry was the member of the trio with the biggest problems, that doesn't mean that the other two are just there to support him. Harry needs to be a friend to them as well.