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
“I think one of my very favorite films of all time was with Peter Sellers when he played Chauncey, the gardener. Being There.”