Maybe the proposal is first and she gives him a bewildered look, and he gives her a moment, excuses himself to the bathroom, so she can think.
Soon as Walsh is out of his seat, Hook appears to increase the shock factor for Emma even more. She gets up to go see the apartment, running out on Walsh. Walsh chases her, and says he knows he moved too fast proposing, she does not have to answer yet and kisses her head telling her to take her time. Then he says good night, leaving her staring after him or something like that.
Headcanon accepted!
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