Garlean Military and Armament

[A_Magical_Unicorn_Rider]

Not just implied. Nero flat out states that her thinking is clouded because she's in love with Gaius.

And even more so, Gaius takes advantage of this.

Hence the scene before you enter Castrum:

Gaius: "You. My quarters… one hour."

And then Livia just nods and heads off.