Cousin Love? Wrong, right, solution?

Scenario: Older cousin, about 60, younger cousin, about 30. Distant cousins although have met in the past....become really good friends and become ually attracted because they are so much alike...he is married now to a non-relative who does not have with him. Been through menopause and doesn't want to anymore. She has a boyfriend of 5 years and is happy. They are both happy but want each other. Is this disgusting? Haven't been seeing each other in person, only email, phone.