Washington: `Transformers` star Megan Fox recently locked lips with `Lost` star Dominic Monaghan.
However, the newly-married star was not cheating on husband Brian Austin Green.
She was just shooting a cameo in Eminem`s upcoming video ``Love The Way You Lie.``
Fox and Monaghan`s roles are reportedly inspired by Eminem`s relationship with ex-wife Kim (whom he married and divorced twice).
"Things start off with a sex scene between Megan and Dominic," Usmagazine.com quoted a source as telling E!.
"Then they fight but end up having sex again."
The source added that the video, which also reportedly stars Rihanna, - is `gritty` with `lots of passion`.