Megan Fox had no problem with Amanda Seyfried in their new movie 'Jennifer's Body.'

"I feel much safer with girls, so I felt more comfortable kissing her in the movie than kissing any of the other people that I had to kiss," she tells MTV News.

But Seyfried did not feel the same way, according to her co-star.

"I think she was extremely uncomfortable. I don't think that -- I know that. She was not comfortable and there was a lot of laughing -- like, giggling fits that happened in between takes," Fox explains.

In 'Body,' Fox plays a high school student who eats her male classmates. The horror movie was written by Oscar-winning Juno scribe Diablo Cody.