I'll soon be approaching my three year anniversary with my wonderful girlfriend, and it's time to start thinking about popping the question. But I have no clue about ring sizes, and it would kinda kill the surprise if I had to ask her. What did you dudes do? Also, realistically what should I spend? The "two months" rule I've heard about seems a little too high. I appreciate the input! I'm very excited about the prospect, I truly believe this is the woman I'll spend the rest of my life with.