Nicollette's wedding off?

There's a rumor that Nicollette Sheridan has called off her engagement and is now back with her ex, convicted drug dealer Simon Main. Sheridan is engaged to Niklas Soderblom (pic above). It is all very "Desperate Housewives."

The ex served time in Italy for masterminding the "worlds biggest Ecstasy bust" the seizure of 330,000 pills worth $17 million. Now a police source says he runs a high-class escort agency in Australia where Nicollette has reportedly had three big dates with the guy. While her fiance was in LA working, she went off to Australia where they dined and went clubbing.

A witness said, "They couldn't take their hands off each other. The old passion was there." Sheridan's publicist says she has no wedding date set with Niklas and Simon Main is just a friend.