Welcome to the forums.
Have you had a chance to speak to your boyfriend yet? He is the one this conversation should be with.
An argument in itself is not unusual. Couples fight. We are good at hurting the ones closest to us because we know their weak spots.
Have you considered his message might be exactly what he means? That he misses you and wants to talk?
It is a good idea to think about what you want beforehand. Do you want to keep trying? It is best to be honest with yourself most of all.
I hope you can reach out and figure this out together.