Complex sentence: That episode brought Fuller into a wonderful relationship; at the same approximate time he met London's by-then husband, Bobby Troup, where the two became lifelong friends, for four decades, from 1960 to 2000.
Split into simpler sentences: That episode brought Fuller into a wonderful relationship while at approximately the same time he met London's then husband, Bobby Troup. The two became lifelong friends, for four decades, from 1960 to 2000.