Luke Bryan and Reba McEntire were spotted enjoying lunch together with friends Wednesday at Del Frisco's Grille in New York City hours before McEntire's appearance on The Tonight Show with Jimmy Fallon – two days after Bryan's own segment on the show.
An onlooker tells PEOPLE the two-hour meal consisted of cheesesteak eggrolls, ahi tuna tacos and oven-baked flatbreads enjoyed while sipping on champagne.
"It seemed as if it was business mixed with pleasure," the onlooker says. "They celebrated with a bottle of Veuve. They both were incredibly courteous and wonderful to the entire staff."
McEntire's manager and husband of 26 years, Narvel Blackstock, was also in attendance. The couple announced their separation on Aug. 3.
In her first TV appearance since news broke, McEntire got up close and personal with an audience member, hysterically serenading him alongside Fallon.
McEntire, 60, was in the Big Apple to premiere her new single, "Until They Don't Love You," while Bryan, 39, is busy promoting his new album, Kill the Lights.
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