Simpson took a 30 mile drive out of Los Angeles with her assistant last week just to meet up with the "That 70s Show" star on the desert set of his new movie "La Muerto," TeenHollywood.com said.
A set spy says, "There was no kissing but the way they greeted each other and then cuddled, there was no mistaking that Wilmer and Ashlee are more than just buddies."
Valderrama has been single since splitting from Lohan last October and Simpson has been keen to play down her on-off romance with pop star Ryan Cabrera.
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