I am still looking into NPD and finding more information. Yes, he would switch himself like, "Dr. Jekyll/Mr. Hyde." He has a desire to make friends and to be liked by them. But at the same time, he views those around him as stupid or inferior. He has mentioned to me that he is not normal. On the occasion, he would say that he finds it difficult to relate to people. I thought he was focusing on his anger problems, not these other parts of himself that I am now understanding.

When he described his father, he seemed to be a no-nonsense type of man that demands his way only. My ex told me that he speaks to both his parents every day. But this is not true, his mother calls him but his father rarely does. However, he respects his father and wants to achieve his same level of success (being a multimillionaire). In his eyes, his father is perfect regardless that he also has very short patience, experiences memory loss (could be from old age), lack of physical affection (does not hug his children or kiss his wife), irrational anger (while at a restaurant, his father yelled at nearby guests to stop smoking but they were in an area where it was ok to do so). He also does not want to disappoint his father and hides things that he is embarrassed about (getting caught by the law for selling drugs, he told me that he was bored and doesn't know why he did it because he didn't need the money).

I witnessed him yelling and being disrespectful towards his mother on the phone once over a minor issue. She remained calm and tried to reassure him that she will help. That's when I got the impression that he was like a bratty child. If something is wrong, he goes to his mother and demands that she can fix it (like when he got into a car accident she had to be the one making the calls to the insurance agencies, although he has been in multiple ones in the past). He constantly tells me that his mother is his queen and no one goes before his parents (he attributes much of this to both of his mother's and father's success and wealth, not their love and affection).

If we were out in public together, he usually pushed me into the role of his mother by way of his anger. He would become agitated and annoyed because we were in public (he does not like crowds because it feels like everyone is looking at him) although he was the one that wanted to go there (mall, restaurant, movies).

He does not get along with his sister but respects her because she has a high paying job and seems to be on the same path of success of their parents. He disagrees with everything else about her.

Once and a while he would say that his family is messed up and has a lot of problems that still continue into today. I didn't think hard on this since every family has their own issues. In the same breath, he will say they are perfect and that I want to date him to be part of his perfect family (not true).

When I described how he made me feel, he responded that it sounded like emotional abuse. I did not take it as him admitting to it because there was no apology or changed behavior. So I assumed that he didn't quite understand what he was doing. But I could be wrong, his actions and words were oftentimes confusing to me.

Yes, this is exactly what it was like. It got the point where he would tell me that what I was either laughing about or making a joke about was completely stupid and not funny. Since he never understood my humor, I tried to joke in the same mean way as him. I made jokes about him getting calls and texts from girls, but this only infuriated him and prompted him to speak down on me.

This was a regular occurrence. I wouldn't confront him about it because he would yell at me. But there were these hidden rules that I had to abide by. Ex: His statements were accepted facts, while anything he disagreed on with me was complete stupidity and illogical. This is when he would try to change my reality and make it seem like my memory could not be trusted.
I always thought the silent treatment wasn't a big deal since if he were to talk to me, it was to start an argument. But it was also annoying if I were to send him a text and he would either not answer or do so much later on although he has his phone on him in case his mother would call.

I noticed that even when he would present me with some form of freedom, it really wasn't. He would demand to pay for my food no matter what (I think this was for the purpose of controlling rather than being generous). Although I would not ask him to take me to places (I felt a little weird that he always wanted to pay since I was more than capable of doing so) he would ask me "what do I want to eat", when I made suggestions he would say no until I suggested a place that he liked. It was always up to him. I told him that I noticed this and he laughed about it. It's a small thing to anyone, but this is how he would try to show control over me in every way possible. I could only eat when he was hungry or to places he liked. This extended into activities and anything else that he wanted to do.

Yes, I agree. I realized this a few times. First, it was rare for him to admit to his faults so I became used to him not apologizing. But when he did, he always backtracked later on and shifted the blame on me. When I tried to confide in him about the recent passing of my father, he created an argument. I am still lost on this one because we were both saying the same thing about the situation, there was no disagreement. But he started to accuse me of being difficult and argumentative what seemed to be out of nowhere. This was one where I was not going to "break" and submit to him. After sending him a series of texts he later apologized and admitted that he should've been more supportive, that he had no reason to become like that. At that moment I thought he understood his illogical and irrational behavior. But a month later he blamed me for the argument and said it would've never happened if I just listened to him (although there was no difference between what we said about the situation).
He frequently made the point to say that if I listen to him my life would be a lot better.