Cleopatra's lover was Mark Antony.
Cleopatra . After Caesar 's assassination in 44 BC , she aligned with Mark Antony in opposition to Caesar 's legal heir Gaius Julius Caesar Octavianus ( later known as Augustus ) . With Antony , she bore the twins Cleopatra Selene II and Alexander Helios , and son Ptolemy Philadelphus ( her unions with her brothers had produced no children ) .