Whose car is it?

On the title, only my name is present although there is myself and another on the car loan. A few months ago the car was in an accident and was totaled out where the insurance company was supposed to pay the car off but didn't. car got repo'ed and before i had chance to get it, the other person on the loan got it. Only my name is on the title, not theirs. whose car is it and how to get it back? This person took it because I will not date them.