He'd have a hard time convincing his
They could only have become close and married if Snape turned his back on the Dark Arts. They repulsed her. He would have turned his back on Malfoy, Mulciber and Avery, and the other future Death Eaters in his cohort.
Lily Only Ever Saw Him as a Friend
The fact that Lily only ever saw Snape as a friend reveals a lot about his refusal to respect her boundaries. In retrospect, it seems that his love was really an ongoing obsession with her that lasted long after her death.
The fact that Lily chose James Potter, Harry's father, only fuels Snape's hostility towards Harry. Snape's character has been widely acclaimed by readers and critics. Rowling described him as "a gift of a character" whose story she had known since the first book.
To be fair, James would (and did) willingly die for Lily too. But Snape loved Lily so much that he was willing to die just to avenge her. He would die just for the memory of her.
J.K. Rowling apparently confirmed that Lily Potter was pregnant again when Voldemort murdered her | Fandom.
Snape's obsessive love for Lily fed his equally obsessive hatred for James, and meant he would stop at nothing ' even arranging the murder of her child ' to possess Lily.
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. With a swish of his wand, Snape conjured up a Patronus – Lily's Patronus, a doe. 'Always,' he said.
Towards the end of The Deathly Hallows, we learn Snape apologised later on. Unsurprisingly, Lily didn't forgive him and severed their friendship permanently.
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.
Voldemort grants Snape's request to spare Lily because Lily's life is not important to him. Snape has done him a solid by reporting on the overheard prophesy, so this is an opportunity for Voldemort to appear magnanimous.
Lily and James weren't just parents, they weren't just a young married couple fighting against the darkest wizard of all time — they were also, maybe most significantly, the loves of each other's lives.
He Called Lily A Mudblood
Even though Snape repeatedly tried to apologize for his mistake afterward, it became clear that it was yet another incident that had done irreparable damage to their friendship.
Snape was torn. He 'loved' Harry in a way due to Lilly but every time he saw him he was reminded of his feelings for Lilly and Lilly's feelings for James. He also seemed to find Harry reminded him of his father whom was someone Snape hated. Hence he probably did not like Harry either.
Draco Malfoy's mother Narcissa was cold, cunning and devoted to the Dark Lord. But she was also a mother, which meant she was willing to risk everything to make sure her son was safe. When Harry survived Voldemort's Killing Curse for the second time, Narcissa pretended he was dead so she could get to Draco.
As "Harry Potter" fans will recall, the word "always" comes from a scene in which Snape reveals to Professor Albus Dumbledore that he has always loved and will always love Harry's mother, Lily. Ultimately, this revelation allowed Rickman to understand that Snape was not entirely evil.
Dumbledore used Snape's guilt over his part on Lily's death to manipulate him, but with the full knowledge what type of jerk Snape was. Snape was, at one level, a tool for his main goal and, therefore, he had to put up with the way he treated students.
We all know Snape was in love with Harry's mother, Lilly and despised Harry's father, James. Snape always gave Harry a rough time during his years at Hogwarts, but on numerous occasions looked out for him (Quidditch Math in his first year when Quirrel tried killing him, The Doe patronus leading him to the Sword, etc).
James' rivalry with Severus Snape also started early when he insulted the wizard while on the Hogwarts Express. Since then, James and his friends, also known as the Marauders, taunted Snape throughout most of their schooling.
That's right! You heard me- their daughter. For those unaware, in the Cursed Child (which was written for a POST Harry Potter world)- it's revealed that at one point in time, Bellatrix and Voldemort conceived a child of their own- Delphini.
Bellatrix used a powerful "love potion" on Voldemort and they have sex while he is temporarily obsessed with her. She then uses obliviate on him while he sleeps (you know, he falls asleep after his post-sex cigarette) and tells everyone that the baby is her and her husband's.
But the author also told The Leaky Cauldron's "PotterCast" podcast in 2007 that Voldemort tried to recruit Muggle-born Lily Potter, along with James, to join the group. She said it was established in "Harry Potter and the Sorcerer's Stone" that, "He wanted them, and they wouldn't come over."