@Poppy298
Huge well done to you for getting away from this abusive relationship. For some reason (perhaps his family set-up taught him this), he believes women are put on earth to serve men and that it is completely okay for men to bully and abuse women to keep them in line. A good boyfriend raises his partner up - tells her there's nothing she can't achieve if she puts her mind to it. This guy wanted to keep you very, very small so he could push you around and keep you at his beck and call. He has done extreme emotional and psychological violence to you. Those are very serious forms of violence. And by the way, I'm sure he would have been physically violent (if he hasn't been already), if he thought he needed to do so to keep you in line.
As PP have said - the next few months while you concentrate on staying away from him will be hard work. You've been with him for 5 years (he's stolen 5 years from you is how I see it) - your entire young adult life so being with him is very familiar even if it's often unpleasant.
It's easy to stay away while he's heaping abuse on you as he currently is but once he sees that isn't working, he may start pleading with you - saying he can't live without you - threatening suicide etc. That is a well-known abuser tactic (and this man is an abuser). You will need to stay strong through that also, if it happens, and it will be difficult because you're a kind and loving person. Also he has trained you to put his needs before yours (another abuser tactic). So - if he starts to threaten suicide, firstly - there isn't a chance in hell he will kill himself - it's pure emotional blackmail. But even if there were such a chance, that's on him. It is abusive to keep someone in a relationship by threatening suicide if they leave - that's just more abuse. No adult is responsible for keeping another alive.
But if he does threaten suicide, that will likely be hard for you to hear. The thing to do is call the emergency services and say that your ex-partner is threatening suicide and ask them to do a welfare check. Then leave it with them. I remember an MN poster saying she had done exactly that and the police turned up at her ex's house and he was happily watching tv. He didn't try that trick again.
Because the key thing is that this man is no longer your responsibility. In fact, he never was. But he certainly isn't now. But it will probably be several months before you stop hearing his voice dripping poison into your ear.
You will need to re-educate yourself about what makes a healthy relationship because your perceptions will be skewed at the moment. The Freedom Programme will be very useful for that. You might also find "Women Who Love Too Much" by Robin Norwood helpful. I know people have directed you to the Lundy Bancroft book. Also, "In the Mind of the Intimate Male Abuser: How He Gets Into Your Head" may be of interest.
Like PP, I think this man is unhinged and he may turn dangerous. He has already been committing crimes against you. You can call the police at any point when you feel you need that extra protection. If he continues with his abuse, you may also want to look into getting a non-molestation order. The www.ncdv.org.uk/ can help you with that if you give them a call. They can talk you through the process. Based on what you're describing, you have a strong chance of getting such an order. Breaching a non-molestation order is an arrestable offence.
Your task now is to rebuild your life without this abusive relationship dragging you down. You have a bright and beautiful future ahead of you and today is your first step towards it! Onwards and upwards, OP.