Justin and Hailey Bieber are "in love" and "super focused" on their marriage despite "constant" split rumors surrounding the new parents, a source exclusively tells PEOPLE.

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The source notes that it's "quite sad that there are constant split rumors" about Justin and Hailey, and says that "Anyone who spends a lot of time with them can tell how in love they are and also how super focused they are on their marriage. They are both very mature for their age and so in it together. It's [a] very special marriage."