'Golden Bachelor' Stars Gerry Turner, Wife Theresa Nist Living Separately

Gerry Turner and his wife Theresa Nist are currently living in separate states -- but despite the distance, the sun isn't setting on their relationship ... in fact, it's quite the opposite. Sources close to the 'Golden Bachelor' stars tell TMZ the couple -- who married in a 'Golden Wedding' special on Jan. 4 -- are doing the long-distance thing, with Gerry chilling at his Northern Indiana lake house while…