Only the paragraphs concerning spousal and child support in this Agreement may be amended if the current financial situation of the Parties changes significantly, whether or not such a change is foreseeable. Without limiting the general quality of the foregoing, a substantial change in the income of the wife or husband, the needs of the children, the loss of employment by one of the parties, a change in the state of health of the parties, the retirement of one of the parties or any other foreseeable or unforeseeable circumstance that would significantly alter the existing or future financial situation of the parties; form the basis of an amendment. The Parties expressly agree that the remarriage or cohabitation of the wife or husband may constitute grounds for requesting amendments to the supporting provisions of this Agreement, notwithstanding whether or not remarriage or cohabitation was foreseeable. . . .