boyfriend left me

Last weekend i had a volunteering job with my team in a mall and we were 6 girls and 6 boys my job was to write notes and take photos. 
I was busy from head to two I didn't have time to call my boyfriend.. 
and since the group mates are my friends they took some silly snaps and post it on story .. 
on the last night of working i went home wrote the notes on a pdf and sent it to my leader and went to sleep 
I woke up to a massage from my boyfriend saying that I'm not shwing him that i love him anymore and I should not work with guys and post their photos on my snap.. 
i got mad that he thought that I don't love him just cause I was busy for 2 days !!! And come on it was only a picture! 
I don't know if I should be sad or happy cause this relationship ended this way ..