Well this was different. Poor, poor Severus, even his ghost cheats on him and eventually steals his girlfriend. This was a delightful insight into Severus' mind. He doesn't even trust himself does he? He doubts his own happiness always, and it's like he thinks he doesn't deserve a good life. Even though the ghost and Hermione would have happily shared their existence with him, Severus just couldn't bring himself to do it. Will he ever find happiness?