I completely understand this. I'll just add this in here. My ex made me feel guilty for everything, and he often would put me down, while also telling me I am crazy when I reacted to anything he said to me. For a very long time, I was blind and truly thought I was crazy and that something was wrong with me. Felt alone pretty much through out our entire relationship and I realized now as I looked back.... that I was the only one trying to make the effort and would held the relationship together. Until one day, I just stopped putting any effort in because I got tired of being taken advantage by him and treated poorly by him. All in time, the person who is being abused will eventually get out because something will add up to your just tired of it all and sick of being the doormat. So you finally stand up for yourself and leave. The moment I stood up for myself, it was over, it was done, because he knew he couldn't manipulate me anymore.