I have a real life friend who wants to play Diablo with me. We're not super close (a 'friend of a friend' situation), and I don't really want to give out my battletag or realid, because I want to keep some D3-only friends separate from WoW and SC2.
It's probably a silly question with an obvious answer that I've somehow missed, but how would I go about adding him, just for D3?
I know that you can friend people who are in your party, but is there any way I can just tell him "add Daetur" or whatever (like, what information/name do I need to give, as if I were giving my battletag)?
Is this even possible to do without having to be in a party?