Severus Snape(the truth)

Snape is the most complicated character in the Harry Potter series.Is correct state to be greyish in nature.Many people call him as the hero of this series and Lily should have chosen him over James Potter.And many other potterheads who have watched only the movies call Lily and James as negative characters and the address Lilly as a gold digger. But the reality is such that Snape always roamed with death eaters and showed his interest in dark arts. He was a death eater before Lily's death and he might have never changed if Neville's parents were killed according to Trelawney's prophecy.......