Advice? I think we broke up

So me and my boyfriend got into an argument the most dumb argument ever. I was at Sephora and saw someone I wanted to avoid so I pretended to be on a call so I dialed his number he answered and I hung up soon after. He text me back asking “who you meant to call” he was saying I was up to someone aka cheating. I explained it to him and he was like oh “that makes no sense no your lying” and i tried over and over to explain myself and nothing so I got mad and went off telling him to think what he wanted, he literally blocked me right after off everything and we’re LDR sooooo can’t really get to him. Idk what to do, am I just better off? We’ve been together for 3 years and we’ve even talked about our future.