To the one I can't have.

Ah, when to the heart of man
Was it ever less than a treason
To go with the drift of things
To yield with a grace to reason
And bow and accept the end
Of a love or a season?

-- Reluctance, Robert Frost

She didn't know if their love would ever end, but she tried to understand that it had to. They'd tortured each other enough over the years. They built desire like fires all over their bodies. They kissed in the rain under the bridge. She had to stand on her tiptoes to reach his lips, and he would hold her close with strong arms. They smoked cigarettes together, and drank wine in the afternoon, and sang at the tops of their lungs. When she was around him she was enveloped in a warm haze of something beautiful. No one else mattered. He looked at her with a hunger that grew sharper over time, and wanted to take her away from everything dark. In those moments that were perfect, their passion seemed invincible.