April 12, 2012 05:45 AM

John Mellencamp and Meg Ryan are still going strong – and the rocker had his girlfriend’s support while working on his latest project: the musical Ghost Brothers of Darkland County, which he co-wrote with Stephen King and stars American Idol‘s Justin Guarini, in Atlanta.

Two days before the show’s world premiere, the couple was spotted dining with five other guests at STK Atlanta. Ryan looked chic in her black maxi dress and black blazer, while Mellencamp was dressed down in a T-shirt, sweater and jeans, says a restaurant rep. – Jennifer Bradley Franklin

NEXT: Pregnant Reese Witherspoon Steps Out for a Ladies-Only Lunch

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