Did Yashamaru Really Hate Gaara

In the light novel Gaara Hiden: A Sandstorm Mirage , the Third Kazekage (disguised as a historian) later admits that Yashamaru was forced to add the “I never loved you” line. The Kazekage says: “Yashamaru’s true feelings were conflicted. He loved Gaara, but he also blamed him for Karura’s death. The mission required him to choose a side. He chose to die as a shinobi, not as an uncle.”