This is one of the saddest threads I have read on Mumsnet.
My best friend had a very similar experience to you OP and I can’t tell you how important it is that you get out now. It still makes me so sad and angry thinking about what she went through.
She was love bombed from the start and by month 3 they had moved in together, despite me recognising the love bombing and telling her what it is, she had low self esteem and wanted the validation of having a boyfriend. His behaviour changed very quickly to very similar to your boyfriends but also more emotionally abusive, doing things and saying things to bring her down, calling her chubby, trying to cut her off from friends and family etc. And these were only the things she told us he was doing, it was actually even worse!
After about a year she knew she needed to get rid and it took another 6 months for her to fully do so.
When she told him to get out he reacted like your boyfriend, angrily. He then quickly switched tactic and started love bombing her again. For months he tried to win her back in different ways only for his behaviour to go back to being awful after a week.
Please prepare yourself for this OP and have a plan because he likely will try to win you back and you need to stay strong.
In the end my friend got a new phone and number, new email address, moved to her mums for a few months until he stopped showing up at her house. She also contacted police who advised a restraining order. She told his mum this would happen if he didn’t stop bombarding her and I think then his mum helped to stop him contacting her.
At the same time my friend went to a sex and relationships councillor. It’s the best thing she ever did. They helped her work on her self esteem and understand herself more, as well as what she needs in a relationship. Two years on from this she’s in a happy, healthy relationship with a guy who treats her really well.
It will be hard OP but you have to get him out of your house and go no contact, block him on everything. Yes you will be alone for a few months but you need to learn to be alone and happy in yourself. You don’t mention friends or family but if you can, use them for support. There is more detail I could give on my friends story but it’s too long already! Just please get out now.
A partner doesn’t fill a hole or gap in you, they build onto what you already have in life. Love yourself, get therapy and stick to your guns, even when it’s hard and he’s telling you everything you want to hear.
You are better off without this man, I promise.