You share an apartment with Russia and Ame. There are 3 bedrooms in the apartment, so don't worry if you are sharing a room. Btw they are a good boy, maybe

Then Ame and Russia see you as their new roommate

USA (male) : YO, HELLO THERE! Russia (male) : HAHA, HELLO NEW ROOMATE!

btw this is not a ship! >:( but, Yaa, up to you. Good luck