Biden says he proposed to her four times before she finally said yes. Biden insists it's important to keep romancing Jill because he loves her more than she loves him.
He says he uses a men's version of Clinique skin cream at his wife's instruction.
The appearance is part of the White House's efforts to get young people to enroll for insurance.
The interview airs March 31 — the last day of open enrollment. Excerpts were released in advance.
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