I hope that listening to the voices of others on your post has opened your eyes to the fact that this isn't a healthy relationship at all. I realise how hard it can be, especially if you don't have anyone else to turn to.
Do you have any family? Means to support yourself financially? Children involved? Do you own a home with him?
You have two choices for the weekend, either stuff him and go out Tbh I wonder if this would even be a safe option for you, given the threats, the abuse may step up a notch.
Or
Dont go out, make him think he's won.
Bide your time, speak to womens aid, speak to a solicitor if need be and come up with some kind of plan to get away from him, so you can start living your life! This doesn't need to be immediate but the sooner the better by the sound of things. Make it your plan to go to said event next year and have a blast with a group of friends.. that you will make once you get away from that arsehole!!
You get one shot at this life, one opportunity to live it and it just feels to me like you are trapped and just existing right now, you've already given him a huge part of your life please don't let him have any more.