Why mark Antony killed himself

During the war of Egypt and Rome, the Egypt ships surrendered to the Roman army because they knew there was no point in fighting, but Mark Antony thought Cleopatra had ordered them to surrender. Antony was very mad, and Cleopatra thought he might go against her so she hid. While the war raged on, and the buildings were destroyed, the Queen was no where to be found. While passing Mark Antony, someone falsely told him that Cleopatra had died. Feeling empty, Antony decided there was no point of living without her and killed himself by stabbing a knife into his belly.