Lincoln's Last Trial: The Murder Case That Propelled Him to the Presidency

[Gene C]

Thanks David.
From what I've read, Dan Sickles was known as being a womanizer (according to Wikipedia so there's no political bias) He also had incidents of "intimacy of an improper kind". Several.
Also many people were as upset with him when they reconciled, as they were at her for her unfaithfulness. They didn't think he should have forgiven her and taken her back

From Wikipedia "Despite pronouncements of forgiveness by both of the Sickles and a brief reconciliation, which caused an outraged public reaction against him, Sickles was effectively estranged from his wife after the trial.... Teresa took ill and died of tuberculosis in 1867 at about the age of thirty-one."