It's time to pick yourself up off the floor and stop being a victim. You were a victim of a ruthless cruel abusive man, no matter what people said about him being perfect. Now you are in danger of becoming your own oppressor. Can you not see that he had to go? That he was not at all perfect? I don't know if it was "the dream" that blinded you to his dreadful ways or your own total lack of boundaries that was only nudged when he set up surveillance on you.
He "graciously" re-gifted the money he had already gifted, by way of an investment in his own (as he saw it) home. He did that because he knew he had no right to its return and to make you feel small again. Which was a nasty and highly successful move on his part.
I am, quite frankly, amazed he has actually left. In a weird way I'm grateful to him for realising that he had gone as far as he could by way of trying to control you. It was becoming too embarrassing for him to stay. He would have had to get even nastier to maintain his hold on you and ultimately that would probably have bored and frustrated him too much to bear. So he chose to go. He never loved you, OP. You were a financial and lifestyle investment that failed for him.
I say all this because this isn't a house that's "empty" - it's YOUR HOME. It shelters YOUR stuff of life. Something you haven't acknowledged once in this thread. He has used and dominated you non-stop for the entire misery of this journey.
You found a spark to post here and that is what you should be listening to. Not this tortured voice of submissive, self-blaming wretchedness. You haven't liked and responded in RL to much of the advice or opinion on here which is entirely your choice (which is ok) but somewhere in yourself that spark-of-you has been kept alive enough for you not to beg him to stay and ruin the rest of your life.
I said before and will say again, LISTEN to that voice, the one that's trying to tell you that this is YOUR life and YOU should be living it in love and harmony; this applies whether single or in a relationship. And yes, even when facing a huge challenge.
You don't acknowledge that somehow, in your own way, you have fought for YOUR life.
Your biggest obstacle now is your controlled and subservient self. I think you might need some professional help to deal with that. Otherwise you'll find yourself working harder to be what another man tells you to be and lose your life again.
Please start owning your life, your home, your car (please tell us that he didn't take/"borrow" that). Your independence is precious and needs to be guarded - by YOU.