Melanie Griffith and Antonio Banderas recently called it quits after 18 years of marriage, and we have to say, we didn't see the longtime duo's separation coming. They aren't the first famous couple to shock us with their breakup — Katie Holmes and Tom Cruise, anyone? Scroll down to see all the celebrity duos that made us gasp when they didn't make it.
Celebrity Splits You Didn't See Coming
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