Van Camp, 30, took to Instagram to announce the news with a picture of herself covering her face with her hands and showing off the sparkling diamond ring.
Van Camp captioned the picture with a red love heart emoji.
eyewitnesses say they couldn't keep their hands off each other.
Love was also in the air and on set for "2 Broke Girls" actress, Kat Dennings, who reportedly began dating one of the show's returning guest stars, Nick Zano, earlier this month. Garner has since married actor Ben Affleck and has two daughters -- Violet and Seraphina -- and another on the way.
Actors Emily Van Camp (L) and Joshua Bowman attend the 24th Annual Environmental Media Awards presented by Toyota and Lexus at Warner Bros. (Photo by Jason Merritt/Getty Images for Environmental Media Awards)REVENGE - ABC's "Revenge" stars Ashley Madekwe as Ashley Davenport, Nick Wechsler as Jack Porter, Connor Paolo as Declan Porter, Gabriel Mann as Nolan Ross, Emily Van Camp as Emily Thorne, Christa B.
The 25-year-old Canadian actress previously dated her "Brothers & Sister" costar and on-screen boyfriend, Dave Annabel, and she had a relationship with her "Everwood" costar Chris Pratt.
Meanwhile Bowman's romantic history is a bit surprising.