I have said ‘it’s over’ a few times in my life. It’s never actually over until one of us commits a ‘deal-breaker’. That could be something that seems benign, such as making fun of my haircut behind my back. Or it could be huge, like sleeping with someone else. And this rule applies to all relationships, friends or romance are the same. It always feels like I mean it, so I learned eventually to stop saying it. But it generally means I’m overwhelmed, I don’t understand, and it feels like it will end in disaster anyway so lets just end it right now.