Please explain Julius caesars and Antonys friendship? were they loyal friends?

Well, rather similar to how Tokugara, Ishida and Hideyoshi all followed on from Nobunaga Oda in Japan it seems, Marcus Antonius and Octavi both saw themselves as successors to Julius Caesar...I am not sure how and why Marc Antony claimed to be a worthy successor, but Octavian was the nephew and adopted son of Caesar, so perhaps Julius was closer to and more fond of Octavian than Marc Antony, one would ume...a good text to read would probably be the Twelve Caesars (I am just thinking of an obvious Ancient Roman history/biography, I have not yet read much Roman literature)...