What's all the drama about Kristen Stewart getting even with Robert Pattinson?

Kristen looks like she sure knows how to play her game, because she is definitely one chick not to mess with. Her role in the upcoming movie "Snow White & the Huntsman" proves that.

After rumors started popping out on social networking sites about Pattinson's alleged date with actress Sarah Roemer on Dec. 4, Stewart decided she too can play the game fair and square.

What did the "Twilight" star do that made Pattinson beg for forgiveness?

Proving she's attractive enough for other men, Stewart called up a close friend, Marcus Foster. Foster, who is best known for two songs used in the "Twilight" soundtrack, was not only close to Pattinson but to his girlfriend as well.

A lot of people wouldn't understand why Pattinson was so affected by Stewart's move, but to cut to the chase, Foster was a wee bit too close to his girlfriend, close enough that she would allegedly "lean" on Foster for support.

"Rob doesn't like how close Kristen is with Marcus," says a friend, according to a recent post on Hollywoodlife.com, "Rob asked her to stop calling him so much, but she refuses."

What else ticks Pattinson off about Marcus Foster? Well, the fact that Foster can easily call Kristen "his" muse.

So, Kristen has definitely proved her point, that she won't allow cheating and that she is definitely one to play a good game. It hit Pattinson hard enough, all right. Sources even say that Pattinson begged on his knees for Stewart not to leave him.

Was her move smart enough or was Kristen way out of line? Seriously though, after saying she could never love a cheater, how come she's still with Robert? Well, that is if the rumors are really true that Pattinson did cheat on her with the equally alluring Sarah Roemer.

Maybe it's about time Kristen Stewart decides if Pattinson is really good enough for her. Sarah Roemer was not the only girl his boyfriend was linked to. Does the name Nikki Reed ring a bell?