Lots of people are going to be disappointed the co-star is taken.

This foreign born B list mostly movie actress who is no stranger to cheating cheated on her significant other with a recent co-star.

The good news is she left her significant other before anyone besides him really found out.

Lots of people are going to be disappointed the co-star is taken.

Sienna Miller
Significant other: Tom Sturridge
Co-star: Charlie Hunnam

Source: http://www.crazydaysandnights.net