You gotta be careful. The movie “Careful What You Wish For” really has no reason to exist. The plot is a by-the-numbers “romantic thriller” that has been done a million times before (and perfect in “Body Heat”) And there really isn’t anything new and unique in this movie, except maybe the ludicrously bad acting by Isabel Lucas. Nick Jonas fares just a bit better, but he isn’t even used to hid full potential. (The cinematographer even photographs him unflatteringly) Dermot Mulroney seems like he wandered from teh street, bored and just so over his role. There are no surprises, no thrills, not even a sexy something here. Nothing to see here, folks, just move right along.