Yeah want to know why they have such great chemistry?

They are humping in real life!!!


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Sources tell ET that ANNE HECHE has left her husband, COLEY LAFFOON, for her "Men in Trees" co-star JAMES TUPPER.

Heche's rep confirms that she and Laffoon have separated. The two were married in 2001 and have a son together.

A spokesperson for her "Men in Trees" co-star confirms that Tupper and his wife split in November, but would not speculate on the on-set romance.

The two are currently in production in Vancouver on the hot show, which just got a new time slot after "Grey's Anatomy" on Thursday night.

The "Men in Trees" storyline has Heche and Tupper playing red-hot lovers in Elmo, Alaska.

Stay tuned to ET for more on this breaking story.
-Tara