did my boyfriend just hint at cheating ?

So last night, my boyfriend and I got into a small argument about something silly. Out of nowhere, he said something like, "If you keep acting like this, maybe I’ll just find someone else who appreciates me." I was totally shocked. It felt like he was threatening to cheat if I didn’t change my behavior. We’ve been together for almost two years, and I’ve never heard him say anything like that before. Now I can’t stop replaying it in my head. Was he just angry and saying things he didn’t mean, or is this a red flag I shouldn’t ignore? I’m feeling super confused and hurt. I don’t want to overreact, but I also don’t want to let something serious slide. Has anyone else dealt with something like this? How do you even talk about it without making things worse? #relationshipadvice #trustissues #datingdrama #needhelp #RomanticRelationships