Katy Perry appeared to hint at her rumored romance with former Canadian Prime Minister Justin Trudeau at a show in London on Monday, after a fan held up a sign asking her to marry him. “You really should’ve asked me about 48 hours ago,” she responded, prompting loud reactions from the crowd. The comment came two days after Perry and Trudeau were photographed together on a yacht off the coast of Santa Barbara, California. #katyperry #trudeau #london