Regret (Broken Kiss)
Elrond hated himself for it. It was said that he was the best healer of his time. But of all people, he could not help his beloved wife. It was an affliction of the soul she suffered from, not of the body. He was powerless.
He saw the regret in her eyes. She, like him, wanted everything to have been different. But that was the way it was.
It was difficult for her to let him come near her. The memories were too deep. There was a coldness between them that neither of them wanted. Their kisses were not without love, not without warmth, but they were broken.
The longer version of this is found in Bitter cold. You can find that on my profile.