Peter almost opens his mouth to ask why anyone had to choose anyone over anyone else, but then, just as the breath he sucked in is about to come out as words, he realizes that he'd always choose Tony, too.

Peter closes his mouth.

Then opens it.

"It didn't happen yet, right? And I mean... if it's gonna happen no matter what, there's nothing you can do about it, so there's no use worrying, right?"