I'd call that a radical interpretation of the text

Langdon dropping everything when he saw she was hurt.

He made a joke to make her laugh and she was able to read the humor in his smile like a book whereas other times the jokes go over her head.

She then made a joke from a year prior that only he would understand, and he still remembered.

Dana and Perlah being confused and hit with "it's an inside thing".

Mel being uncomfortable and overstimulated and Langdon clocking that shit IMMEDIATELY.

Langdon ushering the police out of her room to give her space and even turning off the lights to make sure she won't be overstimulated and giving her a safe, quiet space to decompress.

All the little things between them is making me insane.

They knew each other for a DAY, mind you.

A SINGLE DAY. ALMOST A YEAR AGO.