Oy. This story takes a look at Emily and James, who were high school sweethearts before they were torn apart by his enlisting in the Marines at the time of the Vietnam War. They parted unhappily, and they've both gone on to marry and have families, not with each other, but neither can forget the sweetness and purity and intensity of that first love.
Now thirty years later, Emily is prompted to make an attempt to find James, perhaps for a sense of closure. Both have been drifting along in their marriages, having lost some sense of the person they'd chosen to bind their lives to. When Emily leaves a message on James's answering machine and he calls back, they are startled to rediscover the strength of their sense of connection and of being understood. The depth of their "what if" wonderings leave them emotionally shaken. Despite knowing where such a meeting might lead, they arrange a visit to Washington DC, ostensibly to view the Vietnam Memorial and for James to share his perspective of that conflict as inspiration for Emily's paintings of that era.
The story feels pretty realistically written, and Ms. Gertler takes us into Emily and James's heads and hearts by alternating first-person chapters.
It was just ultimately painful to read though; this is why I don't prefer this type of fiction to romance--it was so clear that there was no way for them to go back in time, no way for a re-do, no way to change the course of their lives so that they could get an HEA without completely tearing apart the fabric of their lives and those of their families.
Alas, no time-travel device or other deus-ex-machina to wrap things up with a tidy bow; perhaps life is all too often like that...