It doesn't surprise him as much as she thinks it might; she's a young woman, after all, and girls her age do tend towards fantasies of wedding bells. But he keeps the analysis to himself and simple smiles, cupping her face in his hands and kissing her adoringly.
"I think you would make a most exquisite bride, my dear Abigail. And you would make me a very happy husband, when the day comes that you are ready for such things."