Legendary rocker John Mellencamp was spotted lunching Tuesday afternoon with actress Meg Ryan at BLT Steak in downtown D.C., Yeas & Nays spies report. The two have been quietly dating for several months with Mellencamp filing for divorce from his third wife Elaine Irwin Mellencamp in mid-January. The musician is in town to play a show at D.A.R. Constitution Hall Tuesday night.