Justin Timberlake spent a romantic weekend with on-again girlfriend Jessica Biel despite rumors of a sexting scandal between him and Mila Kunis. Timberlake and Biel were spotted going into Southern Hospitality on Ninth Avenue to watch the Floyd Mayweather vs. Victor Ortiz fight Saturday night. A spy told us they were joined by Bradley Cooper, Akon and John McEnroe. The pair were later that weekend spotted at The Darby on West 14th Street, where our source said they “looked relaxed” and were “acting like the happy couple.” Timberlake and Biel broke up in March after four years, after he denied a fling with actress and “The Daily Show” star Olivia Munn, but they recently reconciled. He and his “Friends With Benefits” co-star Kunis issued a joint statement yesterday denying they had exchanged racy pictures and texts, after rumors spread on the Web. Reps for the pair said, “At no time did Mr. Timberlake and Ms. Kunis exchange inappropriate texts or e-mails.”