Article continues below advertisementJustin Trudeau's ex-wife Sophie Grégoire responded to his current relationship with Katy Perry in an eye-opening new interview. Grégoire, who split from the former Canadian prime minister, 53, in 2023 after 18 years of marriage, revealed on an episode of the "Arlene Is Alone" podcast how she feels about his PDA-filled courtship with the pop star, 41.Article continues below advertisementSophie Grégoire Says Seeing Your Ex Date Someone New Is 'Normal'Source: Arlene Is Alone podcast/YouTubeSophie Grégoire on a recent episode of 'Arlene is Alone.