However the heart of man is wicked. This fact alone can explain why Mary sat sadly in the drawing-room, feeling a letter that was tucked inside her waistband and John strode moodily up and down the gravel walk, a cigar, badly bitten, between his teeth, and his hand over and again covertly stealing toward his breast-pocket and pressing a scented note that lay there. In the course of every turn John would pass the window of the drawing-room; then Mary would look up with a smile and blow him a kiss, and he nodded and laughed and returned the salute. But, the window passed, both sighed deeply and returned to lingering those hidden missives."Poor little girl! I must keep it up," said John."Dear good John! He must never know," thought Mary.And the two fell to thinking just what was remarked a few lines back, namely, that the human heart is very wicked; they were shocked at themselves; the young often are.Miss Bussey awoke, sat up, evicted the cat, and found her spectacles."Where are those children?" said she. "Billing and cooing somewhere, I suppose. Bless me, why don't they get tired of it?"They had not indeed of billing and cooing in general, for no one at their age does or ought to get tired of that but of billing and cooing with one another.It will be observed that the situation promised well for a tragedy. Nevertheless this is not the story of an unhappy marriage.If there be one thing which Government should forbid, it is a secret engagement. Engagements should be advertised as marriages are; but unless we happen to be persons of social importance, or considerable notoriety, no such precautions are taken. Of course there are engagement rings; but a man never knows one when he sees it on a lady's hand it would indeed be impertinent to look too closely and when he goes out alone he generally puts his in his pocket, considering that the evening will thus be rendered more enjoyable. The Ashforth Travers engagement was not a secret now, but it had been, and had been too long. Hence, when Mary went to Scotland and met Charlie Ellerton, and when John went to Switzerland and met Dora Bellairs-the truth is, they ought never to have separated, and Miss Bussey (who was one of the people in the secret) had been quite right when she remarked that it seemed a curious arrangement. John and Mary had scoffed at the idea of a few weeks' absence having any effect on their feelings except, if indeed it were possible, that of intensifying them.