My fiance (25M) spent our entire savings (which we were planning to use to buy a house for us and our 2 year old daughter) to buy a car he never told me about. What do I do?

Ok, this just happened a little while ago and I'm still in shock so I apologize if this post may come off as a little crude or rambling. Also, sorry for the long post but if you're willing, please read through it and give me your best advice.<br><br><br><br>Ok so, I was looking at our shared savings account in order to see how close we were to our goal. We've been saving for a house for about 4 years now. I saw that the amount of money in the account was WAY lower than it should've been. At the very least, it should've been around 50k. Yet, the savings account contained around 700$.<br><br><br><br>I immediately gave my fiance a call, despite the fact that it was 10 am and he usually doesn't wake up until 2-3 pm. He usually works late night shifts so he's not much of a morning person. When I called him, he seemed pretty groggy and not entirely awake so I knew he was sleeping when he should not have been. I asked him what happened to all the money that was in the account and he was kind of dodging the question and not answering me. When I really started pushing the issue he told me he used the money to buy a car. I asked him how much the car was and he told me it was 40,000$. When I asked what the car was, he told me it was some sports car, I don't really remember the make but i do remember the model. It was a Nissan GTR. I asked him if he really spent that much money without talking to me, and if he really thought it was ok to spend all of OUR savings on a car he didn't even tell me about. He started making excuses about how "he didn't get to splurge on anything in his life. He deserved it, he worked hard for it, etc etc. I told him how this was a horrible idea and that of course he can't just spend all of our savings on a car he didn't even tell me about! He told me that I didn't need to worry. He said that he was going to make a lot of money in the coming months so we would be able to afford the house and new car so I shouldn't stress about it. He also said that it was already a "done deal" so there was no use in talking about it. He said that the papers were signed and the car is at his moms house. He told me if I kept complaining, he would hang up the phone.<br><br><br><br>I really don't know what to do. I feel like I'm in a bit of a panic because our savings are gone and we can't afford a house now. How could he do something like this without even discussing it with me? What do I do?