OoP clues?

[hickengruendler]

No: HPFGUIDX 158022

 
  Argus Pyrites: 
  
> Another clue from OotP?? - Petunia's comment about that "awful boy" 
> (As I'm new, it might be that this has already been well covered in 
> a different thread (But I haven't read 'every post ever' just yet). 
> I'll be brief and assume it has.)
> 
> If that comment does NOT refer to James(as I believe it does), then 
> who? Snape? (second most likely?)Peter? Remus? Sirius?
>

Hickengruendler:

Since you are new, you might not have read this interview, yet. 

http://www.quick-quote-quill.org/articles/2005/0705-edinburgh-
ITVcubreporters.htm

This part relates to the "awful boy" question:

"David Moulds for the News of the World - How does Aunt Petunia know 
about dementors and all the other magical facts she knows?

JK Rowling: Another very good question. She overheard a conversation, 
that is all I am going to say. She overheard conversation. The answer 
is in the beginning of Phoenix, she said she overheard Lily being 
told about them basically.

Is that true?

JK Rowling: Yes. The reason I am hesitant is because there is more to 
it than that. As I think you suspect. Correctly, but I don't want to 
say what else there is because it relates to book 7."

Note that JKR openly said, that Petunia overheard Lily. But she did 
not mention, to whom Lily said and in fact used the term "someone". 
If it were simply a conversation between James and Lily, as Harry 
understandably thought, I think JKR would have said so. No need to 
make a secret out of it. My money is on Snape.