Most Helpful Guy
Of course he can. Does he know any of your friends? He could always ask them for your ring size.
Or, he could buy a ring that he knows is a few sizes larger than your ring size, and have it resized. Most places will do it for free - they ask you to bring in your wife, fiance, etc., determine her ring size, and resize it.0
Most Helpful Girl
Wouldn't that make it too obvious though? Maybe not, I don't know how that works lol
And you can always get a ring resized.0