Oh, this was great! Very sparse writing style, but you get their emotions across very plainly. And I love the backwards revelation:
“And how do you know that? Are you Superman and you x-rayed in?”
-----
Several moments pass before I can form a coherent thought again.
She knows. There is no way she said that coincidentally.
I realize my jaw has dropped open. I close it, swallow hard and speak. “Actually, I only used my super-hearing. Can I come in now?”
And she still doesn't let him

At least until he shocks her -- love that he's convinced it was an incredibly stupid thing to say, but it's the one thing that got her to open up.
I love that "eventually"

Great ending.
Great job, Anna!
PJ