I'm SO good at relationships

Why must I always make things into a train wreck before I can walk away? I need to get better at ending things with my dignity intact! Once I get an idea in my head though, I can't stop thinking about it. Usually the idea is a text message I know I shouldn't send, but then I can't stop myself. I want to know what the reply to the message will be. What is annoying is usually by this point in time I already know what the reply will be, but I am trying to force the other person to actually say it. Another person's silence really does often tell you everything you need to know, and answers every question you want to ask. Why then do I feel the need to ask the questions anyway? It just never turns out well, usually things progress to train wreck status, and only then am I able to accept things are over and move on. Not great. I am in the middle of creating a train wreck right now. The only positive I see in the situation is that hopefully it means I will be able to move on soon. Fingers crossed.