Hmm I think they can

Star magazine ran a story on Ashton and Demi claiming Ashton is a cheater cheater compulsive tweeter.

He recently took a jab at Star...through twitter stating:

"I think Star magazine calling me a "cheater" qualifies as defamation of character. I hope my lawyer agrees."
"STAR magazine - you don't get to stand behind "freedom of the press" when you are writing fiction."

I actually think they can...that's the whole point. Right?

To be fair its not right for publications to say someones cheating when they most likely aren't. But tweeting about that stuff makes Ashton sound like a douche....I guess some things never change!