By every measure, John Kennedy's sex life was compulsive and reckless. At one level, it had clear public consequences. Knowledge of Kennedy's behavior gave FBI Director J. Edgar Hoover absolute job security, as well as the potential power to derail Kennedy's re-election had he survived assassination.
The Internet is a limitless library at your fingertips. It's a great place to start with the acquisition of knowledge. My process is to go to a place when I'm writing about it. Nothing captures the essence, feeling and flavor of a place better than when I'm actually there and doing the writing.
You don't need an explanation for everything, Recognize that there are such things as miracles - events for which there are no ready explanations. Later knowledge may explain those events quite easily.