’90 Day Fiance': Can This Mormon Missionary Hold on to This Brazilian Beauty? (Exclusive Video)

TLC’s new reality series delves into the murky waters of international romance

TLC’s new reality series, “90 Day Fiancé,” examines the world of international romance.

Five couples allow the show’s cameras to follow them as they reunite in the United States and hope that a special 90-day visa for fiancés provides enough time to seal the deal on their marriage.

In TheWrap’s exclusive preview, you’ll meet one of the five couples on Sunday’s premiere: Alan and Kirlyam.

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They met while Alan, 29, was on a religious mission in Brazil. A devout Mormon, he and Kirlyam, 21, have only really seen each other a few times and they’ve saved sex for marriage.

The move to the U.S. will be a huge change for the Brazilian beauty whose hometown doesn’t even have running hot water.

Will 90 days be enough for the couple? Or will Kirlyam realize she has made a major mistake leaving her family and everything she knew for a man she barely knows?

See video: TLC’s ‘Escaping the Prophet': Former FLDS Member Fights to Free Church Members (Exclusive Video)

Watch the preview above.

“90 Day Fiancé” premieres Sunday at 10/9c on TLC.