. . a relationship between a "man" and a "woman" is sexual. Whether or not there is sexual activity between the two is another matter entirely.

A man considers the sexual possibilities of every woman he encounters. He may or may not find those possibilities enticing but they will be considered. He may or may not act on possibilities that are enticing due to other considerations, but men simply have no options here, it's part of the basic programming. Women are programmed differently.