I think it's important to keep your personal life to yourself as much as you can. It protects your sanity and you need to have boundaries. And it helps that enchantment of watching an actor. If you know someone's favourite colour or what they like to do on a Sunday, you won't fall for the character
“In all three cases, and for most human beings, the problem of suffering poses no difficult problem at all: one has a world picture in which suffering has its place, a world picture that takes suffering into account.”