Last night (Aug. 26), Shawn Mendes and Camila Cabello took home the award for best collaboration for their song "Señorita," which simultaneously hit No. 1 on the Hot 100 the same day. The pair also delivered the debut performance of the single at the VMAs, serving up undeniable chemistry during their time onstage. Elsewhere, the duo packed on the PDA last night, further fueling romance rumors. Billboard rounded up the cutest moments of the pair from the show -- see the photos below.