didn't you just move in with your new wife in her home, and used to live in yours? im no real estate expert, but this may have something to do with it
http://www.franklincountyohio.gov/auditor//forms/dte_105c.pdf
2.5% owner occupied reduction. if im reading correctly, if the property is no longer owner occupied (ie, a rental from how i see it), you cant claim that reduction...your taxes may not have went "up", but your reduction may have become null and went back to the original rate
if not, i dont know. just taking a stab at it. you can locate your property at http://www.franklincountyauditor.com and click property search. it will show on there if you have the reduction