Boyfriends Temper is Scary and Violent

I've been dating my dude for about a year. We live together, no kids. The problem is when he is mad it's like there's nothing else he sees except his problem and god help anyone who tries to make him see reason. We were having a discussion the other day and I said something he didn't agree with. When I tried to defend my point he just shouted me down and asked how I could think anything like that because it was stupid. I ended up just shutting down and not saying anything and just letting him win because I knew if I tried to assert myself he would just get even more upset. He said we were having a discussion but it just felt like an attack.

This has been happening more often lately and every time he tries to force me to see his opinion I feel myself getting so sad and turning further away from him.

But I can't tell him this because he wouldn't even hear it, he would just get defensive and shut down.

The other problem is that his temper is SCARY. He doesn't direct anger out at me specifically but when he does get mad you can bet things are going to get thrown. I've seen him hit his game console really hard and throw things at our wood floor. The other day was a bit of a turning point, he got really, really upset about a work problem and he threw a metal chair at the floor. I happened to be sitting near him when this happened and the chair landed on top of my foot. It was incredibly painful and I'm bleeding and I just scurried to get out of his way so he wouldn't get even more upset that I got caught in the crossfire. He saw that he hurt me and he apologized. I know he didn't mean for the chair to hit me but still. Why throw it in the first place?

I just feel so sad. I wanted (and maybe still do if he gets help) marry this man. He is so good in so many other ways but his temper literally scares me. He is so loving and so kind and he holds me when i have nightmares.I grew up in a household where i was yelled at and put down frequently and this just brings back all the feelings I thought I left behind when i was a kid.

I don't even know how to bring this up to him. I feel so torn. I can't say how I feel because he'll say I'm bringing emotions in or it will turn into an argument and I'll shut down because I can't take it. I love him but I feel so alone in this.