Margot Robbie, who has played alongside legendary actors such as Will Smith and Leonardo DiCaprio, is in a relationship with Tom Ackerly. Nevertheless, the two of them would rather keep their relationship private.
Actress Mary-Kate Olsen and Banker Oliver Sarkozy have been married since 2015. People definatelely notice their age difference rather then their actual relationship. They keep their relationship completely out of the public eye.
Leighton Meester, also known as "Blair Waldorf" from the hit series Gossip Girl, is married to Adam Brody. You might know him as "Seth Cohen" from The O.C. The two like keeping their relationship between themselves and are not seen together very often.
Cameron Diaz married Good Charolle Guitarist Benji Madden back in 2015. They really don't like presenting themselves in public, so they aren't seen all to often.
For years Alexis Bledel played the role of "Rory" in the hit series Gilmore Girls. She has been married to Vincent Kartheiser since 2014. The couple is generally very secretive. So much so that even the birth of their sun was completely hid away from the public eye. The press found out only months later after their first child was born.
"Harry Potter" star Daniel Radcliffe is in a relationship with co-star Erin Darke. They got to know each other on the set of Kill Your Darlings back in 2013. He rarely talks about his relationship.
Pretty Woman-star Julia Roberts has been married to camera man Danny Moder since 2002. The two met on set of the movie The Mexican. Roberts receive constant remarks about how Moder isn't good enough for her. She responds by saying "Our jobs aren't married to each other".
Ryan Gosling and Eva Mendes are very rarely seen together in public. The two have been married since 2011 and have two children together.