Read this before your next movie night.

You may think snuggling up with the latest Cameron Diaz flick is the best way to spend a romantic evening, but not so fast -- new research says mushy movies are bad for your relationship.

How could "My Best Friend's Wedding" impact your bond? Well, according to relationship experts at Heriot Watt University in Edinburgh, romantic comedies give people unrealistic ideas about love and sex, and cause them to communicate poorly.

"Marriage counselors often see couples who believe that sex should always be perfect, and if someone is meant to be with you then they will know what you want without you needing to communicate it," says the university's Dr. Bjarne Holmes. "We now have some emerging evidence that suggests popular media plays a role in perpetuating these ideas in people's minds. The problem is that while most of us know that the idea of a perfect relationship is unrealistic, some of us are still more influenced by media portrayals than we realize."

So if you're secretly hoping your guy will declare his everlasting love a la John Cusak, take a mental "Cut!" and realize your bond is already perfect, warts and all.

Tell us -- do you subconsciously expect your marriage to mimic the movies?