Miley Cyrus and Liam Hemsworth may have rekindled their engagement, but In Touch can exclusively reveal that there is trouble in paradise.

Sources say The Last Song costars are constantly fighting before the wedding, and it's taking a serious toll on Miley.

MORE: Noah Cyrus Debuts Her First Single "Cry"

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Their relationship "lacks trust" and "Liam is always picking fights with Miley for no reason, which gives her severe anxiety," an insider explains. "If the fighting doesn't stop, history could repeat itself."

The Hannah Montana actress was hoping to finally tie the knot in summer 2017, but "she fears the end is near" thanks to this rough patch.

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