The Well of Loneliness

Fate, which by now had them well in its grip, began to play the game out more quickly. That summer they went to Pontresina since Mary had never seen Switzerland; but the Comtesse must make a double cure, first at Vichy and afterwards at Bagnoles de l'Orne, which fact left Martin quite free to join them. Then it was that Stephen perceived for the first time that all was not well with Martin Hallam.

Try as he might he could not deceive her, for this man was almost painfully honest, and any deception became him so ill that it seemed to stand out like a badly fitting garment. Yet now there were times when he avoided her eyes, when he grew very silent and awkward with Stephen, as though something inevitable and unhappy had obtruded itself upon their friendship; something, moreover, that he feared to tell her. Then one day in a blinding flash of insight she suddenly knew what this was -- it was Mary.