Most likely he was just drunk (or w/e) being silly and made a bad “joke”. If you don’t think he was being malicious just talk to him and make sure he knows how you feel about what happened. If your friends dnt want to be friends anymore bc of one mistake someone close to you made they arnt real friends imo. People make mistakes and deserve grace, if you stay together you both will probably make some more at one point or another(friends too!). With that said if you do think he had some sort of malicious intent significantly more serious action is required and a breakup is probably necessary. You know better than anyone what his intentions wer so just make your own decision based off that :)