I was flying from Jacksonville, North Carolina to College Park, Maryland on an IFR flight plan to go to a Redskins game. It was a CAVU day. The following exchange took place somewhere southeast of Richmond:
Washington Center: Skyhawk 68E, traffic two oclock, 10 miles, westbound, 500 feet above.
Skyhawk 68E: Negative contact, but Im looking.
Washington Center: Piper 123, traffic 10 oclock, 10 miles, northbound, 500 feet below. Piper 123: Negative contact, but were looking too.
A few minutes pass.