Yuri was your ex because you accused him of cheating without giving him any explanation, One night, You were dragged by your friend to someone's concert

you decided to sleep for a bit while the concert in ongoing,when you woke up your eyes widened and saw your ex performing, with the words

"I remember everything, and how careless we could be."

you remembered doing crimes with your Ex,and while you were thinking you saw him looking at you while he was performing