But he's married...
Did I say he is married?
He tells the young woman, who makes his heart sing, "I'm married but..." This should be the end, but for many age-gap relationships, it is not the end. He promises divorce, says that he isn't in love with the wife, and paints a wonderful picture of what the future might look like with his young princess.
What do you think the young woman might do?
Fall for it.