Person B is working on a something and Person A is staring fondly at Person B, then mutters.

Person A: “Marry me~”

Person B: (looks up surprised) “What?”

Person A then realizes they’ve said that out loud with a bit of panic but quickly comes up with a cover. They then replying it calmly.

Person A: “I say verity. what did you think I said?”

Person B: (whilst blushing) “N-nothing.”