At Antony’s house in Athens, Antony complains to Octavia that Octavius has “waged / New wars ‘gainst Pompey,” and “spoke scantly” of Antony. Octavia tries to calm Antony and says she doesn’t want to be caught between her allegiance to her brother and her husband. Antony tells her to go to Octavius in Rome to make peace. In the meantime, he will start to raise an army.
Now that Pompey is no longer a real threat, there is nothing to keep Octavius and Antony allied and they are starting to feud for power. Unlike Cleopatra, Octavia is a passive female character, and finds herself caught between her loyalty to two different men.