I agree with you that JKR needed to either flesh these things out more or else skip them entirely (skipping might've been the better choice - she doesn't seem to have a good handle on romance). I'm just saying that usually when you bring up what was specifically shown in the books as an argument against the pairing as written, fans of the canon pairing defend it by claiming that just because mutual happiness, love, and affection wasn't shown doesn't mean it didn't happen. But in the same breath, they strike down Remus/Sirius shippers by claiming that "nothing like that was ever shown in canon." It's one thing to speculate what might've been happening off screen, but they seem to believe that just because their speculation supports a canon ship, then their speculations must be canon, as well. But they're no more justified than any other speculation of non-canon events :/ That's why I'm annoyed at this whole idea that the limited POV of the books is why we got a limited view of what was going on - that only holds true in non-fiction. Fiction writers have control over what the audience knows, and when a writer can't support a ship they claim is happy and wonderful, that's just bad writing. Remus and Tonks just flat out weren't written well.