Newly single Eva Longoria is developing a primetime NBC dating show, Page Six can reveal. The actress’ production company is working on the provisionally titled “All About Love,” where singles are set up with good matches by multiple topflight matchmakers said to include Amber Kelleher, of Kelleher International, and Steve Ward, who appeared on VH1’s “Tough Love.” Sources close to Longoria tell us the show goes into production next month, and NBC has ordered a full series.