Losing Julia by Jonathan Hull

Jonathan Hull spent ten years working at Time magazine in various positions, including Jerusalem bureau chief and as a national correspondent, winning several prestigious awards along the way. Now writing fiction full-time, he lives in Marin County, California, with his wife and two children.

During World War I, Patrick bonds with Daniel, but it is Daniel's lover, Julia, who changes Patrick forever. Daniel shares his letters from Julia with Patrick, and soon, Patrick feels Julia's presence wherever he is. Ten years later Patrick and Julia meet in France, and after a brief encounter, Patrick makes a fateful choice.