Instead of attending the husking bee, what does John intend to do? What does this reveal to Kit about his feelings for Mercy?

John intends to visit Kit rather than attend the husking-bee. This reveals his feelings for Mercy.

Sooner than you think, maybe thought Kit. "Are you going to the husking bee tonight?" she inquired mischievously.
"I don't know," he considered. "Will Mercy be there?"
"Mercy? Why no, I don't suppose she can be. It's more than a mile away."
"Then I think I shall spend the evening at your house instead. I seldom have a chance to talk to her.'
"But they say a husking bee is such--" Slowly she began to realize what he had said.
"John! Why should you want to talk to Mercy?"
His eyes twinkled. "Why do you think I come so often?"
"But I thought--we all thought--I mean--"
"It has always been Mercy, from the very beginning. Didn't you guess that?"