
Visible crew/equipment: When the fusion reaction starts to destabilize and Harry shouts, "Shut it off!" to Otto, a boom mic is reflected on the glass doors behind Harry. (00:37:57)

Directed by: Sam Raimi
Starring: Kirsten Dunst, James Franco, Alfred Molina, J.K. Simmons, Tobey Maguire, Rosemary Harris

Visible crew/equipment: When the fusion reaction starts to destabilize and Harry shouts, "Shut it off!" to Otto, a boom mic is reflected on the glass doors behind Harry. (00:37:57)
Mr. Ditkovich: If promises were crackers, my daughter would be fat.
Question: How come Harry and Peter stopped living together?
Answer: While it's never mentioned in the film, the most likely explanation is that Harry, as a rich kid, grew tired of "slumming it" and decided to move back into his mansion.
Harry and Peter's relationship quickly turned sour after Peter refused to discuss Spider-Man as Harry felt Peter knew more than he let on. Peter is Spider-Man's "personal photographer," and Harry only wants to avenge the death of his father. It's not unlikely to assume Harry left to live alone because he was angry Peter wouldn't help him find Spider-Man.