There is a new article online on the set of Half Blood Prince.

Here is what Radcliffe had to say on this topic: “It’s a complex story, it isn’t a simple romance because Harry is such a close friend of Ron’s, and Ginny is his sister, and Harry feels as if he’s walking on eggshells”. According to director David Yates, “the fifth [film] was pretty intense, but this one has more comedy in it (…) There are many subtleties in the relationship, and a lot of sexual and emotional tension.” The movie also promises a lot of action and magic galore, and it will count with at least one scene that is not in the book.

Click the link above or MORE for the full article.
Thanks DanRadcliffe.com!