Model Hailey Bieber has been happily married to Justin Bieber for nearly four years, but she says that marriage is difficult. In a cover story for Harper`s BAZAAR`s September ICONS edition, the "Rhode" creator, who was only 21 when she married the "Yummy" singer, speaks up about their triumphs and tribulations. She told the magazine, "I just think life is changing all the time... I think a perfect example of that is over the last six months, both of us have gone through very serious health issues. You have to figure out how to deal with this s--t as it comes, you know? There`s a reason they say `for better or for worse.`"

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