Offset and Cardi B The Hapa Blonde/GC Images/Getty Images Cardi B and her husband Offset held hands at a Met Gala afterparty Monday, May 7 in New York City. The on-again, off-again couple walked together as they attended Richie Akiva‘s 10th annual “The After” party at Casa Cipriani. Usher, Serena Williams, Doja Cat, Teyana Taylor,…