How do I get out of a Cosign on a snowmobile

What is the name of your state? Idaho

I cosigned on a snowmobile with my ex-boyfriend (obviously while we were together). I am now engaged to someone else, and I want to see if there is a way to get out of the cosigned agreement on the snowmobile. Does anyone have any advise?

The company that loaned the money will not release you from the loan unless the loan is paid or refinanced (highly unlikely for a snowmobile loan). The lender doesn't want to lose you as a source of money in case the ex defaults on the loan.