"Woah, woah woah, hey. That's not fair." Spider-man put his hands up defensively and took a reluctant step back to give Harry some space. He hesitated only because they were still significantly close to the ledge of the building and Harry didn't exactly look steady on his feet. "It's all fun and games when you want to meet Spider-Man, but now I'm just some freak in spandex? Harry, I'm hurt. I'm actually wounded. What are you doing out here?"
He was trying, desperately to keep his usual, up-beat, Spider-persona going, but it wasn't easy. He was confused and suddenly a little worried about what else was going on with Harry that he might not know about. Of course he recognized how hypocritical it was of him to take it personally that someone else was keeping secrets from him, but he planned to tell Harry the truth. One day. When things were settled, and Parker didn't feel like he was just adding his responsibilities to Osborn's growing list.
"Wait, it's obvious what you were doing out here. Scratch that. Just, aw geez, Harry."