Remus and Tonks' relationship gives me a lot to think about. For example, does anyone out there think that they were dating secretly? Were they, perhaps, going steady in secret for a while until Remus decided they had gone too far? Or were they dating openly through OoTP, and Remus cut it off in HBP? Or were they just really good friends and they wanted to be together, but Remus was too noble to put her in danger?
I guess what I'm really asking is: What are the odds of them having a secret relationship and then breaking off (for noble reasons, of course)?