Don’t go on the night out.
Take time to get support in place. Find out what benefits you can claim, where you can live etc. Do you work? Do you rent? Who’s name is on the tenancy? Get special/important items together (ID documents for you, birth certificates, sentimental things), pack enough clothes for you and the children to manage for a few days in case you have to leave and he doesn’t let you back in the house.
If you go out, as others have suggested, he might move out for a few days but then he will manipulate him into taking him back. He may become aggressive/violent. He may threaten suicide. People can predict what he might do because abuser follow a pattern.
He has controlled you for 10 years. He will not be happy when you tell him/he finds out you want to leave. I think it takes 7 times on average to finally leave abusive partners. This man has controlled, manipulated and abused you since you were a child. The age difference is telling. I have never known a 26 year to be interested in a 16 year old. Yes it can happen and it all works out fabulously, but I think the majority of times it doesn’t. He has taken your life and it’s time you took it back.
Has he ever been physical? You may think it’s not physical abuse because you didn’t end up covered in bruises, but not quite hitting you, intimidating you, punches walls etc is all still physical abuse. Leaving is the most dangerous time and he may increase his abuse to try and scare you back into your place. Has anyone in your family/friends ever mentioned that he may be controlling etc? You probably don’t see them much any more. If they have, they could see what he was like and could be just the people you need to break free.
Take your time, do some research (post in Relationships. LOTS of women have been in your position and will be able to help), make your exit plan and be careful. 