No, newlywed Megan Fox isn't stepping out on new hubby Brian Austin Green.

It was just another day at the office for the Transformers beauty as she kissed Lost star Dominic Monaghan, and Breaking Celebrity News has the sexy shots for you.

The pair will appear together in the music video for Rihanna and Eminem's hit song The Way You Lie.

Fox and Monaghan filmed the video Friday in Los Angeles, and the backdrops included a rooftop, a dive bar and a liquor store.