Does a man who likes a young woman and the young woman is not interested so he finds someone else is that how affairs start jumping from one young woman to the next?
This is not really how affairs start. An affair is when the
person is committed to another, usually by marriage, and enters
into another relationship at the same time. A young man whose eye
is on a woman who is already committed or who is not interested has
no real choice except to move on. He never had a relationship with
that woman, and so it is not an affair in any sense of the
word.