Sean Penn has been dropping out of projects recently, seemingly clearing up his calendar. Why? Because Natalie broke his heart of course! From Fame Crawler…

Rumor #1 – Sean filed for divorce back in April because he thought his alleged relationship with Natalie Portman was really going somewhere. When Natalie denied the relationship publicly, Sean was heartbroken and now he’s trying to pick up the pieces.

The other rumour is that he’s checking into rehab, which would probably be preferable because that version above makes it sound like the relationship solely existed in his head.

More likely, it exists in the heads of the tabloid writers.