2. Demi Moore and Ashton Kutcher
Their marriage lasted from 2005-2013 and the relationship was defined as open, as long as they were physically together.
In other words Demi does not mind inviting a pretty young thing into their bedroom, as long as she chooses who joins their marital bed and remains in control.
The word is that Demi is bisexual, but she has not confirmed it officially. Either way she was comfortable with sexual freedom, but not lying or hiding relationships.
When Ashton crossed the line and had his own fun without her, things got rough between the two. Brittney Jones, who was Ashton’s fun on the side said that he told her that he and Demi had an open relationship, and he was not in fact cheating.
Clearly Demi did not see it that way, and the two split shortly after. Apparently when practicing an open relationship, the rules or boundaries on exactly how open it is, should be clear from the start. It sounds like Ashton was given an inch and took the whole darn town.