Multiple faces

I seem to identify myself with confusion a lot nowadays. There is just too much deception in this world for a person to handle. People change themselves so easily to get out of a tough situation. It is becoming harder than usual to come to a conclusion about a person. In contradiction to my previous blog... it is not right to change yourself... at least not too often. Changes get to a point where people cannot understand who you are anymore.
People I see and interact with change themselves so easily when they feel that they are doing something wrong to hurt the other person. That is of course the right type of change. But this change has to be consistent. It has to be for real. It should not be only during the time when you have done something wrong. You should not change yourself when the offended one forgives you... The change should be forever. When it is not forever... it means you are just deceive the other person. For example, I know this girl who's husband shouts at her in public, humiliates her in front of his friends and threatens to hit her if she talks back to him. When she tells him that she is not able to handle this, she needs to get out of this marriage, he changes... He treats her like she is the queen of the world. If this change is for real then she should forgive him that is what you would be thinking of now. But on the contrary, this change is not for real... It is just so that she can forgive him... once forgiven he goes back to treating her like a piece of garbage rather a better comparison will be carpet (used when it has to get the dirt out of your shoe but other wise it is not cared about).
It is not right to have multiple personalities, it is hard enough for a people to understand a person for who they are.. but if you show them different personalities that are a total contradiction to each other what will people do???