"Nothing. Except that I think I've found out what's wrong between our families, Jon."
His heart began beating very fast.
"I believe my father wanted to marry your mother, and your father got her instead."
"Oh!"
"I came on a photo of her; it was in a frame behind a photo of me. Of course, if he was very fond of her, that would have made him pretty mad, wouldn't it?"
Jon thought for a minute. "Not if she loved my father best."
"But suppose they were engaged?"
"If we were engaged, and you found you loved somebody better, I might go cracked, but I shouldn't grudge it you."
"I should. You mustn't ever do that with me, Jon."
"My God! Not much!"