Leo XIV celebrates first mass as pope; Pope Leo’s brother speaks about their relationship; Beloved teacher surprised for Mother’s Day live on ‘GMA;’ and more on ABC’s Good Morning America. ––– Subscribe to ABC News on YouTube: https://abcnews.visitlink.me/59aJ1G ABC News is your daily source of breaking national and world news, exclusive interviews and 24/7 live streaming coverage. Download the ABC News app for the latest headlines and alerts: https://abcnews.go.com/devices Watch 24/7 coverage