I mean, if she was a random girlfriend... well, shit happens. But a childhood friend who you have been dating for 7 years stabbing you like that? Bro, if you look at her face when she met that rich dude, she practically wet her panties. And it feels kinda bad that he doesnt feel ready yet to start a new relationship even if its one of casual sex.
But in those cases, be it fiction or reality, even if the person doesnt feel like it, they were lucky enough to dodge the bullet before there was some serious shit mixed in, because if this happens when you are married or have kids or some mortgage, you are fucked.