Bill appears to be stimulated sexually by his visits the neighbor’s apartment, as does Arlene. Like her husband, Arlene too spends a great deal of time at the Stone’s apartment, rifling through their possessions.
Bill seems to be sexually aroused by his visits to the neighbor's apartment, just like Arlene. Both Bill and Arlene spend a significant amount of time at the Stone's apartment, rummaging through their belongings.