I totalled my car. They will pay off my auto loan in both names and I will get money in return to put down on another car. will he get half of that?

It is difficult for me to answer your question without more information.  It sounds like you owned the car with someone else.  If that is the case, the check from the insurance company will most likely be made out to both of you, and will require both signatures to negotiate.  If I can answer a specific question for you, give me a call.  (317) 574-3090.