Could you marry someone who only slept 3 hours a day and expected you to keep up with their schedule?

My sister is getting married and she says the only problem is that her fiancé likes to sleep only about three hours a day and doesn’t like for her to sleep more than him. Personally, I love sleep and don’t think I could give that up

Could you marry someone who only slept 3 hours a day and expected you to keep up with their schedule?
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