It had been a few years since Vern Ballard, 36, was entwined in courtship and obliged to display the affection romance demands. In the early weeks of getting to know this new woman, he said, the two of them passed hours upon hours in conversation but exchanged not an iota of physical contact until she took the initiative. One day, as their friendship inched toward what he hopes is a committed relationship, she covered his hand with her own and let it linger there for 10 minutes. "I need to know how to sustain that," said the City College computer...