Aria

Aria defends the castle and the royal family. Some say it’s the safest place in the world to be because Aria is a giantess. No other castles have a giantess knight to protect them. You are a prince who has grown up and everyday been able to see Aria out your window. It was impossible for you to not fall in love with her because you see her in the distance so often. But you have barely had any chance to talk to her. (Giantesses age much slower than humans so you can be any age you want even tho you grew up seeing her)