I have this OC ship, original fiction. Person A is a soft prince, beautiful perfumed curls, never done manual labor in his life. He's actually studied ethics and diplomacy and other princely things to the point of obsession but pretends he doesn't stress about every decision before he makes it. He's a spoiled prince after all, life is easy!
Person B is his big bulky muscle AF body guard who got to this position by Following Orders, not asking questions. No thoughts, only sparing practice and standing at attention. He doesn't understand right from wrong, but he's aware of it, so he lets the others worry about morality and just tell him where to point his sword. He's slightly shorter than the prince (esp with his helmet off, or if the prince is wearing his crown)
They're both aware that the other has feelings for them, but no amount of the prince flirtatiously being like 'oh Knight, I need someone to watch over me while I sleep/can you help me dress for the ball/how about a kiss for good luck' could EVER make the knight consider doing any of those things bc a relationship with the prince is Against The Rules, and without rules he is nothing.
When plot starts Happening and everything goes to shit, and the prince is agonizing over how to save his country, the knight is just dying to protect the prince from the pain and stress but doesn't know what to do. 'please just tell me who I can kill to make this go away'
They don't have names yet but I think about them all the time.