Right please listen to me. I've just come out of an 8 year relationship putting up with this shit.
Firstly I'm glad you said boyfriend. Please don't marry him.
As others have said, it is a form of emotional abuse and it's horrible.
It's a cycle that you don't realise you are in. What you will end up finding is that you will spend your life walking on egg shells tip toeing around this man in order to keep him happy. It will literally take over your life and it's mentally and physically exhausting. You will forget about yourself. As long as he is happy then so are you. If he's miserable, so are you.
If you try stand up for yourself, it won't work. He won't see it your way. If I got an apology would be something along the lines of 'sorry if I upset you but just forget it, you don't get it'. It was never sincere.
You will find that he falls out with you over the most ridiculous things. Of course you are trying so hard to never annoy him so nothing he actually falls out with you about will be anything major. You won't be able to get your head around it because the things he falls out with you about or so petty.
This is a big one - you will be relieved when he starts speaking to you again because the torture of the silent treatment is over. That's all I cared about. I knew what he had done was wrong but it didn't matter. He was speaking to me again. And i must try harder in future to never let that happen again. That was my thought process.
You will probably end up finding that you do everything he wants and asks of you. You will be scared to upset him. It's all about control op. Right now he's pushing you to see what he can get away with. To train you up to be his emotional punch bag.
My exh used to tell me it's how he deals with things. The silent treatment. He would rather not speak that argue. It didn't matter how much I told him that it made me feel uneasy and really quite scared of him. He continued to do it over and over again. It took 7 years when I actually started to not care about it. I would always try and get him to speak to me during the silent treatment and resolve the issue. Once I started to withdraw, he couldn't understand it. He is a total narcissist.
Please be wary of all this op. It really isn't fun. Don't spend your life walking on egg shells trying to please someone who really doesn't care or deserve you x