Should I try to fix this or should I let him go..

My bf was at work yesterday, I forgot to text him back. Sometimes I think I reply but I don’t. I checked later around 7, the time he usually gets out & I realized he sent the last message. I figured I’d wait til he texted or called saying he was out. Besides, I was in downtown with an old friend of mine. I started uploading pictures on my story, got home, checked the viewers and he was one of them. Not only did he not ever text, but he changed the profile picture he had with me to one of himself. I texted him “why didn’t you hmu when you got out of work?” But dumb me didn’t realize I had texted his old contact number until this morning when I looked back to check. Then my mom comes in & apparently he told her that we don’t talk anymore because I was out in downtown uploading pictures and whatnot. I feel like that’s such a stupid reason for him to get mad at me. Should I even try to talk to him?

Edit: I can’t show proof, I deleted the message where I texted him because I got mad when he said that