People News Justin Bartha and fitness trainer Lia Smith get engaged 05/17/2013 Justin Bartha is engaged to fitness trainer Lia Smith, multiple sources confirmed to UsMagazine.com Friday. Read More RELATED NEWS Jimmy Fallon's 'The Tonight Show' dropping to only four nights a weekAshley Tisdale announces birth of her second childSelena Gomez is a billionaire TAGS: Justin Bartha