The couple's sighting comes two weeks after it was revealed they were expecting their first child together. After indulging in fish sandwiches and orange soda, the duo took back to the sea for a sailing lesson.
The Hart of Dixie actress, 32, and Christensen have been vacationing in Barbados since last week. Bilson was spotted on May 22 showing her baby bumpin a tiny black bikini as the couple spent some time at the beach.
The Star Wars actor and Bilson meet on the 2007 set of the film Jumper where they played star-crossed lovers. The couple got engaged in 2008 and separated for three months in 2010 before getting back together.