I don't think there is anything necessarily wrong with you. I tend to do the same thing with my STBXW. She can be a really a** sometimes and then the next day is all nice like nothing ever happened. I could take the approach of blowing her off and not responding to her because she was such an a** but that would only cause her to lash out more frequently and keep the drama going. Instead I let her "crap" roll off my back like a duck and try to not let it affect me. Of course maybe there's something wrong with me too! :-)