It really depends on the context. Why is Arya angry? Well, anyway, with the limited information I would probably talk it over with him and criticise him for being so angry at me when I probably wouldn't intentionally try to hurt someone's feelings or upset them. After all, if he is angry he probably didn't talk it over with me which failed to give me the change to change things or make it up to him. This is just me and probably very vanilla, but I don't know the context.
If he is mad at me over something silly, but annoying. I might act cute and suck up a little.
If he is mad at something serious (heaven forbid!) I might hang my head in shame and give him some space.