Give him space. He'll come around when he's ready. Not everything needs to be fixed right away. Time is a good thing. You both will have time to calm down and think things through from a thoughtful place instead of an emotional one.
My guy best friend and I starting arguing a couple days ago. He saw the message but didn't respond. I want things to be okay between us but I don't want to come off as annoying by blowing up his phone with texts. What should I do?