Celebs Who Swing: 20 Celebrity Couples In Open Relationships

13. Ashton Kutcher and Mila Kunis

Sometimes open relationships seem to be almost infectious, with one famous person passing on the idea to others through dating. Demi Moore and Bruce Willis had an open marriage, and when Demi married Ashton that continued. Now, the rumors are that Ashton hasn’t stopped that behavior in his new marriage to his old TV costar.