I wouldn't treat a romantic scene any differently than any other scene. I would really say the biggest preparation was chewing gum and breath mints! For a kissing scene, it's all about the breath mints!
I like to investigate all different kinds of people, I guess, and find out what makes them who they are, and try to be honest in the portrayal, and truthful, and find out how to understand that person, how to communicate that person's experience.

