Whats Happening!

My boyfriend and i have been together for half a year and things are getting.. well weird.
Everytime I just daze off and think about nothing he always asks whats wrong. There was always nothing wrong and it starts an argument. Another incedent was two days ago, my parents did something I didnt like (play music that triggers me; touch childhood, He knew that.) and they all ganged up on me, thinking it was a joke. I gave him the silent treatment, so I wouldnt say anything i would regret. When we got back to his place I refused to speak. I was upset. So he locks his bedroom door. He used an actual lock. I rolled over to sleep and he rips the blankets off of me. I felt unsafe. I started crying and then he just watched me cry with a sly look on his face. I grabbed a bottle cap... I was going to cut myself. He grabs it from me. Tells me to grab it from him, I did and it cut him. I was on his arm, i just wanted to throw it away. I started screaming.. for my dad. He grabbed at me, pulling, yelling at me. I didnt want to say anything to harm him. Then last night he told me that he thinks of ways to kill me. Then he gripped at me. My anxiety is so bad I puke and shake. What do I do? whos at fault? am i doing something wrong?

The persistent asking of "what's wrong?" could mean several things.

One, it could be an indicator of possessiveness and insecurity.

Two, it could be a learned response based on prior interactions with you. He may have learned which actions from you are prior indicators to certain future behaviors. For example, if you suddenly go quiet that may mean that you're going cut yourself with a razor or you're going to go into the bathroom to inject heroin. So he asks you "what wrong?" before you do so.

Telling you that he's thinks of ways of kill you is disturbing. Is your current relationship a possessive one or an abusive one?

Also, grabbing a bottle cap to cut yourself when he pulled the blankets off of you also seems like strange behavior. Are you a self-harmer and what exactly did you hope to accomplish by cutting yourself with the bottle cap? Were you seeking attention or possibly seeking relief from a distressing situation?

We were fighting.. Ive had problems self harming for years. I didnt want attention. I wanted to be alone but he kept pushing it. I get silent whenever I think. I was thinking about how to approach him about everything, why there was so much tension but he gets angry whenever i try to think for myself. He began to grab me. He locked the door. I began to cry and i lost control of myself... Were better now but im still hurt.

Okay, I believe that you weren't seeking attention then.

It sounds to me that the guy might simply be the violent, possessive type.