Yes, I tend to do that, too. It is definitely a sick cycle

But you are not alone. I think it has to do with it being what we think we deserve, even if we don't like it. If that makes sense. Plus it is all we know in terms of relationships. That idea was formed as a child, and its hard to think differently, even if during the "good" times, we think we are worth more, it is during the bad times that seem to matter...