LV will never trust Snape again

[sarah28962000]

No: HPFGUIDX 35217

I've only been reading along for a week now, so maybe this has been 
addressed somewhere in the past 35,000 posts, but I don't think 
Voldemort has any chance of trusting Snape enough to make him a 
useful spy.  Remember in the first book, where Snape is berating 
Quirrel, about how he needs to decide which side he is on?  Well, 
duh, Voldemort is right there on the back of Quirrel's head.  It must 
be pretty obvious which side Snape is on now.  If Voldemort thought 
there was any lingering loyalty in Snape why wouldn't he have Quirrel 
whip off the turban and reveal himself and get Snape to help him get 
the stone? or even posess Snape instead?  There's also the matter of 
Snape trying so hard to save Harry's life, when everyone knows he 
hates Harry (or at least Quirrel knows, and I assume V. knows what 
Quirrel knows).  All Snape had to do was look in the other direction 
& Harry would be dead, & no one would be the wiser, and instead, 
Snape volunteers to referee the next match to protect Harry!!  What 
self-respecting death-eater wouldn't take a bitter satisfaction in 
letting the little squirt die, even if he didn't think there was any 
chance of V. coming back.

But to me the important part is that V. obviously doesn't think it 
worth the risk to reveal himself to Snape, even to help Quirrel stand 
up to Snape's bullying when the're alone in the forest.  How does he 
know Snape is loyal to Dumbledore?  Did he reveal his true colors 
(intentionally or not) before Voldemort was disencorporated (or 
whatever).

At the end of GoF, V. says he is going to kill Snape (at least that's 
how I interpreted it) and I don't see how Snape is going to convince 
him otherwise.

Sarah (who really likes Snape & is worried about him)