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Sunday marks the season three finale of A&E's The Glades, and an exclusive clip proves that it will contain a defining moment for the show's central couple.

Over the course of season three, Callie's relationship with Jim has become more and more distant as they attempted to bridge the long distance gap between Palm Glade and Atlanta. Now, in a new clip from Sunday's finale, Jim vents his frustration to Jennifer, who makes a not-so-surprising declaration.

Jim & Jennifer Head to Private Island on 'Glades'

Watch the clip to see the drama unfold, and then tune in to the season finale of The Glades on Sunday August 12 at 9/8 c on A&E.