Shouldn't Snape hate Draco? Is JKR giving us a hint by having him not?

[Ariana Seibel]

No: HPFGUIDX 84550

Cheekyweebisom said:
It seems to me that there must be something else going on here. What
could make Snape favor the child of a DE? I can think of a few
things:

-Snape is still working for LV.
-Snape doesn't know Lucius is a DE.
-Snape simply needs someone to favor in each year, and Draco's the
most promising, future DE or not.
-Draco is Snape's sex toy, and as such, gets preferential treatment.
-Snape wants to train a replacement -- a Slytherin who can do work
for the Order. Who better than the son of one of LV's right-hand
men, provided he can convert Draco to the good side?

Ariana says:
Or perhaps he fells compassion for a boy with a mean father?