Sebastian Stan is breaking his silence on becoming a father for the first time. News broke in April that Stan's girlfriend, Annabelle Wallis, is pregnant with the couple's first child after the Mercy actress was spotted with a growing baby bump in New York City. In an interview with Deadline published on Monday, May 11, to promote his new movie, Fjord, Stan, 43, opened up about his latest role as a first-time dad, which resonates with the plot of the new drama.