Disclaimer: I do not, nor will I ever or have ever owned Full Metal Alchemist
--- Unknown Past ---
Roy knew her as a soldier and how she was able to change a bad situation good; mainly using her gun. But he didn't know the important things. Like, where she grew up, how she lived, or her favorite colors. He knew she was close with General Grumman, but didn't understand how close or why. And watching Riza talk in the break room with the General about the upcoming holiday, he smiled and made himself a promise. One day he would get those answers, one way or another. And asking Hughes, head of investigations, was not one of the ways.
A/N - I really don't think they know much about each other. Riza is very professional and doesn't talk to much about stuff outside of the military.