Some people just choose to become controlling and dominant for the sake of their ‘so-called’ pride and ego. These people feel that they should have an upper hand on the relationship so that you can’t crush their ego and pride. They want you to get accustomed to their expectations and way of living rather than them to adjust according to you. There can be a bad experience of a controlled relationship in the past, or they may do it just for the fun of it.
If you observe any of these characteristics in someone, you know there’s a reason behind it and you can definitely find out what it is. Although, it is likely that the person will change in future, there is a need to take a stand and make it clear to the person that although you love him or her, the fact of him / her controlling your life is not acceptable to you. Consult a psychologist if need be; because your giving in, is actually encouraging this behavior instead of stopping it! Take care.