10. Mary-Kate Olsen & Olivier Sarkozy
Picture Source: etonline.com
Now this is one totally unexpected, and just plain old weird couple! The half brother of former French President Nicolas Sarkozy, and one of the once famous, adorable Hollywood little twin sisters, the Olsen twins. I mean, he is 17 years older than her, and looks like he is 25 years older than her! When you take a look at the picture, he looks more like a father to her than he looks like her husband. Yes, they did get married! It is just hard to imagine that the little twins are all grown up now, and that they are old enough to get married… It seems that the age difference between the two is irrelevant, and that they are happy together, and that is all that matters at the end.