As awful as it is, and how it went down, he has done you a big favour moving out. I hope he moves on, and far away. You have to prioritise your mental health now. His disregard for your safety after an attempt...is beyond words to me. Beyond what is to be human, in fact. I find that disturbing - but not uncommon.
Can I be frank with you. I think that you are at high risk of returning to the relationship.
"I cannot believe I tried to save him".
I am concerned that this has been one of the central features of how you relate to one another, and you may struggle to let go of that role as his saviour. And that it continues to reel you back in. It can be a very powerful psychological bait, and his personlaity, once upon a time, would have charmed you.
You must be wondering to yourself the extent of his lies. How far do they go. It sounds like they can be pretty out there, and there isn't one area of his life that hasn't been lied about.
If I was you what would hurt the most wouldn't be that he is a closeted gay anymore, now its gone this far. What would hurt the most is that even on the most basic level - he does not respect you, and probably never has.
He sounds very opportunistic. And that he uses the hetero -married -with-kids shield to hide not only his sexuality, but other sides of him too - all for personal self centred, gain. It must be devastating to realise you could have chosen to be with someone like that, but in general, it is once they are inside an intimate relationship that the mask comes off. I promise you, you are not a fool, but he no doubt makes you feel like one.
I have had a lesbian friend in a similar situation to you in a gay relationship and a straight friend too. They came to mind the other day when I was I reading an article in The Guardian about Alex Skeel and his girlfriends coercive control. I think that you are at risk of turning the blame on yourself, and I would urge you to seek therapy. If the law was involved its probably going to be a drawn out process. You will need support for a few years I think.
He has used you in ever way imaginable, and broken more than your heart. But in leaving, he has done you a favour. Given time, you will see that. And that knee jerk reaction to constantly save him, will turn into a desire to put your energies into yourself, once you regain some self respect.
It's a long painful journey. I wish you well.