Shaw and Kirk had been romantically linked in 2262.  The relationship did not work out, but they parted as friends.  Despite this personal history, Shaw maintained her professional integrity and presented a strong case against her former lover that was only refuted after an investigation began by CommanderSpock revealed the truth of Finney's frame up. ( TOS: "Court Martial")

Areel Shaw was the only female Starfleet officer who wore a dress uniform in the entire run of the original series.  She was played by actress Joan Marshall.