Could everyone please bear in mind that if the OP has been in an abusive relationship for any length of time, she will have been gaslighted and had her perspective and self respect and self esteem eroded gradually until she is probably not able to see the wood for the trees.
That is why she is posting here and asking for help.
It's not helpful to blame her for getting in this situation or not making different choices. Abusive relationships are horribly complex and very hard to leave for a whole variety of reasons; emotional, physical and financial among others, not to mention the traumatic bonding that can take place. Having had twins with her partner will only have complicated matters - that's partially how abusers operate. They wait until they perceive their victim to be in a vulnerable position, or less likely to leave them before ramping up the pressure (often after childbirth, or marriage or moving in together.
It's possible that this is the first time it's occurred to the OP that her relationship is really outside the bounds of 'normal' if his behaviour is what she's used to.
Please be kind and try and avoid blaming - trust me, having walked in her shoes, it really won't help.
And I also second moving this to Relationships - OP there are lots of us who have experienced this sort of thing - THIS IS NOT YOUR FAULT and you, of course, are categorically not any of the things that he is saying. And remember that relationships don't have to be violent to be abusive.
I can only imagine how hard this is for you, especially only 8 weeks after having twins, but please know that we can support you and help you through this.
Womens Aid:0808 2000 247 - you can just ring them for a chat about your situation and you might find it helpful. They are lovely.