Now wait a minute. I never read the books, so I don't know all the little insights, but I have a question. When Harry met Dumbledore in his vision after Voldemort 'killed' him, he mentioned that he found it strange that Snape's petronis was the same as Lilly's, a doe. Dumbledore didn't find that to be strange at all. Also in Snape's tear Harry was able to see Snape's past which revealed that he loved Lilly, but no one must know. Was Harry Snape's illegitimate love child? If so wouldn't that negate the notion that Snape died without love? After all he loved Harry. Otherwise he would never have sacrificed his entire life to guarding him, even though he never acted like it.