OMG, LW1, get out of here.  Block all possible means of communication with this guy and RUN FOR YOUR LIFE.  He lied, he cheated, he STOLE YOUR CAR--how much do you need to convince you that this is a bad situation??

He does not "need" you.  He's totally cheating on you with that other woman (and probably more women than that) and always will because it's totally working for him--he's got you and her and all of them on the hook, giving him money and putting their lives on hold for him.  You have already done far too much for him.  He's not the person you've convinced yourself he is, and he never will be, and you will never, ever, win this.  He'll never really choose you--he won't be faithful and he'll keep using your money, car, credit, etc., for his own ends.  Get out of this man's power trip.