He didn't tell him, because there was always a possibility of Voldemort peeking in Harry's mind and seeing that piece of information, because if voldy had learned that snape was a traitor, he would have killed him, and hid all the horcruxes into more safe places, that was the same reason why snape didn't gave harry the ...
because he never wanted anyone's pity. Snape would be in effect serving Dumbledore to keep safe the son of his abuser, the man that the only woman he ever loved -after she turned her back to Snape- married and had a child with. Snape wanted to save Lily, he didn't want anything to do with JP or H. Lily was dead.
Snape even said that he didn't want anyone to find out that he was protecting Lily's child, “especially Potter's son” (pg. 679 of Harry Potter and the Deathly Hallows) because of his hatred for James. Instead of providing Harry a safe haven from his abusive home with the Dursleys, he tormented Harry over an old grudge.
In order to preserve his position as a trusted Death Eater, Severus Snape was forced to tell Voldemort the true date at which the Order planned to move Harry.
He said, "According to Victorian flower language, asphodel is a type of lily meaning 'my regrets follow you to the grave' and wormwood means 'absence' and also typically symbolizes bitter sorrow." If you combined that, Snape's words mean "I bitterly regret Lily's death."
It's a word that gained so much more clarity and tragedy after Harry Potter and the Deathly Hallows revealed that the nefarious Professor Severus Snape was actually serving a nobler cause: protecting Harry from Voldemort out of love for Snape's childhood friend Lily Evans.
Similarly to Harry, Snape's patronus represents a person. In the memories he gives Harry before his death, Snape shows Dumbledore his patronus, using the form to prove his love of Lily Potter, Harry's mother.
Although Snape may not have projected his memory of James onto Harry, he still would have been predisposed to dislike him by virtue of him being James Potter's son. Harry being in Slytherin would not have changed this fact.
Later in the year, Dumbledore revealed that Harry was in fact a Horcrux, meaning that he would eventually have to die. Now, as firmly established, Snape was not the greatest fan of Harry, but that didn't mean that he ever stopped loving Lily. Dumbledore was surprised that Snape seemed to care for the boy.
A Professor at Hogwarts School of Witchcraft and Wizardry, Snape is hostile to Harry due to his resemblance to his father James Potter, who bullied Snape during their time together at Hogwarts. As the series progresses, Snape's character becomes more layered and enigmatic.
He doesn't trust Snape as Dumbledore does, but he believes that he can detect any disloyalty. Moreover, Voldemort regards Snape as highly intelligent and therefore ' as a true Slytherin ' a person whose top priority is to take care of himself. To his twisted mind, selfless equals stupid.
Most probably not. Snape's hatred of Harry came from having to see James's face every day and Lily's eyes behind his glasses. Harry would've been a constant reminder of the love Snape lost, and I believe it would've been more painful if he was in Slytherin because they'd have to see each other more.
The acclaimed author explained that Harry paid tribute to Snape because of "forgiveness and gratitude." Though Snape bullied Harry, he also saved him.
They were close friends, she saw in him someone special that she could care about. But she couldn't be with him. So, it seems like it was very unlikely that Lily ever found out Snape loved her.
Those tears from Snape were because he had just been bitten by Nagano but he was also thinking about Lily and how he was going to be with her therefore, his tears were partially caused by his memories with Lily.
As Rowling sees it, Snape eventually sacrificed himself in order to save Harry at the Battle of Hogwarts, so Harry felt the need to honor him. There's a whole essay in why Harry gave his son Snape's name, but the decision goes to the heart of who Harry was, post-war.
Voldemort intentionally made six Horcruxes, but when he used Avada Kedavra on Harry, he unintentionally created a seventh Horcrux. Instead of dying, Lily's love for Harry created a counter 'curse' known as Sacrificial Protection and saved Harry.
Horace Slughorn (1997 - present) Horace, after being convinced by Dumbledore and Harry Potter, returned to Hogwarts as the Potions master. After Severus killed Dumbledore and became headmaster of Hogwarts, it was decided that Horace was to become the Head of Slytherin House once again.
Later, Snape tries to apologize for calling Lily a Mudblood, but she's not interested; she ends their friendship due to his association with Death Eaters. Seventh Year: James becomes Head Boy and seems nice enough now for Lily to start dating him.
“You disgust me,” said Dumbledore, and Harry had never heard so much contempt in his voice. Snape seemed to shrink a little, “You do not care, then, about the deaths of her husband and child? They can die, as long as you have what you want?” Snape said nothing, but merely looked up at Dumbledore.
He's pleading with Snape to kill him. This is never explicitly said, but it's implied to be what he meant when he tells Snape (in the Pensieve) that he, Snape, will be helping “an old man avoid pain and humiliation” by killing him.