Remember some of the ex-couple's most notable moments.

As he becomes one of Hollywood's hottest heartthrobs, here are some facts to help you get to better know Sebastian Stan as we celebrate him on his 40th birthday. 

In conversation with his former costar Margot Robbie, Sebastian Stan shines a light on how he gets into character both physically and mentally, from roles like rock legend Tommy Lee to a charming psychopath in Fresh.