No. Severus didn't like Petunia. He even talked Lily into breaking into her room to read a letter she had received from Albus Dumbledore politely explaining that she couldn't attend Hogwarts.
No. Lord Voldemort killed Severus Snape's true love.
No he is not he is like a triple agent. lol
He sorta did, yeah. He felt sorry for him. He had a hard life, that Snape.
Harry Potter's aunt is Petunia Dursley, née Evans. Petunia is Harry's mother, Lily's, sister. Petunia and her husband Vernon raised Harry after the death of his parents.Vernon Dursley also has a sister, Marge, whom Harry is forced to call Aunt Marge.
Because Gryffindor and Slytherin are rivals and Snape did not like Sirius' friend, James Potter. Also, Sirius and James targeted Severus as someone to humiliate throughout their school years.
Vulnera Sanetur was the song-like incant of a healing spell and counter-curse to Sectumsempra spell, both of which were invented by proffered Severus Snape.
Aunt Petunia (Dudley's mother, Harry's aunt) was extremely fond of her son, Dudley Dursley. This resulted in the spoiling of Dudley, and the birth of numerous affectionate names for him like 'Diddykims' and 'Dudders'.
Severus Snape is not considered attractive at all. He is described as having sallow skin, crooked yellow teeth, a large, hooked nose and greasy hair. His eyes are very cold, as is his personality. Snape was often described as looking like a bat due to his large flowing cloak.
Alan thinks that Snape is a strange character because of how you don't quite know how he feels. Snape doesn't like Harry but he does save his life, and doesn't ever reveal too much about his feelings.
Petunia Dursley is the sister of Lily Potter and Harry's aunt. Her husband, Vernon, is Harry's uncle and their son, Dudley, is his cousin. In the third book we also meet Vernon's sister Marge. Harry is forced to call her Aunt Marge even though they aren't really related.
Severus Snape was born to a pure-blood mother, Elieen Prince, and a muggle father, Tobias Snape. His parents fought constantly while he was growing up and Snape always tried to escape from it. He knew all about the wizarding world and was a wizard himself. He also began to notice Lily Evans, a girl who lived near him, had magical powers to. Eventually he worked up the courage to tell Lily what she was and though the first meeting didn't go as well the two met again and soon became friends. Snape was always in love with Lily. He told her all about Hogwarts and how they would be going. When they did go to Hogwarts he was upset when Lily wasn't placed in Slytherin and instead went to Gryffindor house where she met James Potter and Sirius Black who would spend the next seven years bullying Snape. His friendship with Lily began to deteriorate over the years as she didn't like the people that he was friends with due to their cruel nature and involvement with the Dark Arts. Snape was very jealous of James Potter who fancied Lily and over the years asked her out many times. Sirius Black almost killed Snape who was always curious about Remus Lupin. Sirius told Snape to look at the Whomping Willow and how he could enter it. James found out what Sirius has done and stopped Snape, saving his life, but not before Snape discovered what Remus was. Dumbledore swore him to secrecy. In his fifth year, Snape lost Lily when he called her a mudblood after she tried to help him. She refused to speak to him again and his involvement with the Death Eaters become deeper. Snape joined the Death Eaters shortly after leaving school and was no doubt heartbroken when Lily decided to marry James. In 1980, Snape overheard part of the prophecy and told Lord Voldemort about it. He soon regretted it after he learned that Voldemort intended to kill Lily as it was her son whom the prophecy spoke of. Snape went to Albus Dumbledore and told him what would happen, in return for their protection, Snape joined the Order of the Phoenix as a double agent. He told Voldemort that he was spying on the Order for the Death Eaters. In reality, he was spying on the Death Eaters for the Order and would only tell Voldemort certain information which Dumbledore wished him to know. After Lily's death, Snape promised to help protect Harry although he hated him and was reminded each day that Lily had picked James over him. Snape killed Dumbledore in 1996 on his orders, he then protected Hogwarts and was killed by Voldemort. He asked Harry to look into his eyes while he was dying so that the last thing he would see were Lily's eyes.
Severus Snape lost the women he loved to his enemy. His leader then killed her and he agreed to protect her son, an everyday reminder that the women he lived chose somebody else (as Harry Potter looks like his father) and that she is gone. Plus, he just the type of teacher who enjoys bullying defenceless children (Neville, for example).