Love on the Spectrum star Abbey Romeo showed support for David Isaacman on social media amid news of the reality TV couple's split. Abbey, 27, "liked" David's Instagram post about his upcoming children's book on Thursday, April 9 - the same day multiple outlets reported that the costars called it quits on their nearly five-year romance. "Hi everyone! I wrote a children's book!!! I'm excited to share that The Big Five Save the Lions is coming August 11!" David, 31, wrote in his post, which included the book's cover artwork.