It's not necessarily a feeling of betrayal or anger, it just drags me down in the dumps quite heavily because I spend a lot of time worrying about the possibility that what they say might come true. For example when one of my ex's asks me out and I say no because she dumped me 6 times and I can't trust her and her response is to say shes going to kill herself I can't help but have a sleepless night over it because I still care about her a great deal.
What's important to me is figuring out when these death threats are genuine and when they are just thin air. It's a difficult line to establish and theirs always that fear at the back of my mind that it will come true. I guess I suck as an emotional human-being
Thanks for all the advice so far. I'm young and naive. I'm pretty sure you've all been in my situation at some point before.