If in your written dissolution agreement and the presumed order of dissolution you assumed your former spouse's debt on a gymn contract, you are unfortunately obligated to pay down this debt even though you did not sign the gymn contract. I suggest that you carefully read the dissolution decree as to the amount that you owe. If the actual debt is less than the decree and you pay it off in full, so be it. If the decree states you pay a certain amount on this debt and you pay it, then most likely you have satisfied your obligation. I suggest that you may want to consult further with a family law attorney about your matter.