This is what probably happens after the death of Severus Snape. The mentor and only friend who cares and consoles him is Albus Dumbledore.
A note: This happens after Lily heal his pain and comfort him a few minutes after his agonizing death... (Until he see James beside her and refuses to go along with them, of course...) Desolate and confused, he sees Dumbledore and cries his pain to him, relieving himself ^-^
To o better understand, I'll do a short comic about this, soon