Jessica Simpson and her estranged husband, Eric Johnson, are still moving forward with their separation despite their recent reunion in Las Vegas, a source exclusively tells Us Weekly. "They are not getting back together or reconciling," the source says. Simpson and Johnson, both 45, raised eyebrows on Friday, August 29, when they were spotted flying to Vegas together on a Southwest Airlines flight. Later that evening, they attended the first show of her sister Ashlee Simpson's residency at Voltaire at The Venetian Resort.