Cleopatra sought to use his power to help her ascend to the throne.
The loyal followers of Ptolemy XIII, to ensure that the then 13-year-old Pharaoh could firmly hold his reign, had a general behead Pompey, trying to win Caesar's favor, and rid Cleopatra thoroughly.
Unexpectedly, this autonomous move instead enraged Caesar.
Taking advantage of this, Cleopatra ordered a servant disguised as a merchant to wrap her up in a large rug, and delivered her to Caesar's residence.
Cleopatra successfully used her beauty and wisdom to bewitch the legendary emperor.
However, what ensued was not Caesar taking her back to the Roman Empire, but instead putting pressure on the royal family of Ancient Egypt to help Cleopatra return and share power with her younger brother, Ptolemy XIII.
The royal family rebelled in anger, thus allowing Ptolemy XIV to ascend to the throne smoothly.