The Smallville beauty and her SNATCH star lover have spent the past two years living in Tinseltown and are now working together on Jackie Chan's new movie, as well as teaming up for British flick THE GUVNOR.
And in a bid to be at their professional peak for the collaborations, the couple have embraced a tough training regime, using Chan's trademark martial arts skills.
A source says, "Kelly and Jason are working flat out to get ultra fit.
"They are both big names in Tinseltown and every movie mogul in town has heard of them. They can't fail to achieve big things together."