Diary of a wimpy kid the ugly truth is a 2010 bestselling childrens fiction book by american author and cartoonist jeff kinney and is the fifth book in the diary of a wimpy kid series the ugly truth sold 548000 copies in its initial week of publication edging out decision points which sold 437000 copies kinney initially struggled with the decision of whether greg would be a non aging . Diary of a wimpy kid the ugly truth is the 5th book of the diary of a wimpy kid series the book was released on november 9 2010 it revolves around greg and rowley becoming ex friends. Diary of a wimpy kid the ugly truth paperback greg heffley has always been in a hurry to grow up but is getting older really all its cracked up to. Diary of a wimpy kid the ugly truth book 5 dive into jeff kinneys fifth instalment of his rib tickling and bestselling diary of a wimpy kid