"I thought he could overcome his feelings..."

[pippin_999]

No: HPFGUIDX 129092

Lupinlore:
  I mean, what in the world
> (wizarding or otherwise) would lead DD to think Snape could do such
a thing on demand?  You have a man who rages, smolders, and all but
goes into convulsions over Harry and his activities, yet you think
that  just because it's an emergency and you ask it of him he's going
to be able to put all that aside and work with the boy in a very
"intimate" activity like Occlumency training?  That is an 
extraordinarily...well...ignorant view of human nature, even for an 
elderly man who has  perhaps too positive a view of the world and 
who admits to making mistakes. 


Pippin:
The young often  do not realize that even their deepest feelings
may prove transitory, nor have they experience that time heals all
wounds. The old, on the other hand,  may forget that this is not
always the case. Dumbledore has lived long enough to see many
things he once  thought were imperishable pass away.

Then there's the additional complication that Snape
is an actor and has the ability (and perhaps the tendency)  to hype
even genuine  feelings for effect. Like the rest of us, Dumbledore may
not be sure how  much of Snape's ranting he ought to take seriously
 -- in fact  Snape himself  may be uncertain of this.

Snape might cling to the illusion, like many another victim of
compulsion, that he can quit  bullying Harry when ever he wants.


Pippin