When you think about it, we actors are kind of prostitutes. We get paid to feign attraction and love. Other people are paying to watch us kissing someone, touching someone, doing things people in a normal monogamous relationship would never do with anyone who's not their partner. It's really kind of gross.
I find that it's easier to disguise yourself when you go to Florida or places like that, because no one is expecting to see a celebrity there. When you throw on a hat and glasses, no one really looks at you twice - because why would you be in Florida? People just assume that if you're famous, you're in Hollywood.