AIO. My bf walked out of my school gathering over me performing

I had this school gathering thingy for the last day on Friday. Family, students, friends etc. I got asked to sing a solo by my music teacher and the song was ‘my all’ by Mariah Carey. (I know odd song for a school gathering but my teacher said it gets my vocal range the best and she wanted me performance to stand out). My bf walked out as you could see from the messages. And we haven’t really spoken since. Am I crazy for thinking this is weird thing to get mad over?? Or am I overreacting. Maybe he thought I was aiming it at my ex or something but he won’t even let me talk it out with him.

(Please excuse this account)