Should I make things better or break up?

Im in a LDR. We visit each other often and we are 3 Years together. Last week he was ill and we didn't talk as much so i wasn't saying about what was I doing and so on. One guy came to me in a bar and I talked to my boyfriend about it another day and he was mad bc i didn't said it when it happened. In the last few day is he barely talking to me, I was nagging about iz but nothing. He said „you could have talk about everything and everything would be okay now“. He said I should stop nagging about it and do whatever I want. I don‘t know if I can fix it and how
Should I make things better or break up?
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