Peter tries to imagine what hitting rock bottom would be like for Tony, but much as he tries, his usually-active imagination isn't able to pull together anything.

He wants to tell Tony that he's glad he's okay, but he doesn't want to sound too sentimental. Peter doesn't know why he's not okay with saying it to Tony, because he'd be okay with saying it to anyone else. Maybe it's because Tony's not very sentimental and he's not entirely sure how he'd react to it.

He swallows back his reservations and just says it.

"I'm really glad you're okay," he tells him. "I'm sure it can't be easy being an Avenger sometimes."

And that might have been part of why he rejected Tony's offer; he knew he wasn't ready for that sort of responsibility yet. Just taking care of Queens was enough for awhile.

He still had plenty of time.