How did Sirius lure Severus into the Willow? (was: James the Berk?)

[drliss at comcast.net]

No: HPFGUIDX 105845

I've been reading over this discussion with interest, and have a pure speculation thought that might go with it, or might not.
I'm almost wondering how much Lupin plays into the MWPP vs. Snape thing.  I have no basis for the following scenerio except an overactive imagination and a long wait for some parts I need.
What if...
Lupin and Snape had been friends at first?
Ron and Harry are somewhat unusual in that they've come to a new school, met each other right off at the beginning, and remained best friends ever since.  But what about another scenerio?
On the surface, Lupin and Snape are cut from the same cloth.  They're both studious.  They're both serious and academically oriented.  They both have somewhat troubled backgrounds (even if Lupin had full parental support, being a werwolf your whole life counts as troubled!), and they both haven't appeared to have many friends.  Neither of them have been all that well liked.  Say they meet on the train, and they hit it off.  For the first few months, they're friends.  Lupin, with his desperation to be liked, is just the kind of person that would be friendly with Snape from the beginning.
Then Lupin gets close to his housemates James and Sirius.  James and Sirius don't like Snape.  Lupin's DEFINITELY not the type of person to stand up to James and Sirius about the matter, and he and Snape might not have been a perfect match as friends anyway.  So they drift apart.  
That could account for Snape's anger at James and Sirius.  (His anger at Lupin has never seemed as personal to me.)  Rather than blaming Lupin for being weak, he blames James and Sirius for stealing his friend (and then tormenting him horribly).  
I can see where that would be a messy situation.  I can also see then why Snape wouldn't tell anyone right off that Lupin is a werwolf.  He'd be hurt and angry, but there might be that last shred of loyalty that kept him quiet.  (It was interesting to me that Snape was very curious as to where Lupin went every month.  I suspect that curiousity came long before the other mauraders were able to follow.) 
Like I said, TOTAL speculation, but it's an interesting thought.
Lissa

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