Relationship

Me and my boyfriend been together for 5 months and we hardly had any big arguments until now. We argued because he was supposed to come this weekend and spend time with me and my kids but he decided to cancel at the time I thought he was halfway to Charlotte. He lives in hickory nc. He canceled because he wasn’t feeling good. But what pissed me off is that he always promise to do something but never do it. He always breaks his promises and gets mad when I try to explain it to him. He just says I nag to much. But he doesn’t understand it’s hard not being able to see him and be with him everyday. And ever since we had that fight we don’t talk to each other the way we used to. And he doesn’t pay any attention to me when we video chatting. I feel like our connection is not good right now. But I love him so much but I have a feeling that things changed since we argued. I really need advice because I don’t know what to do.