This could be a bachelor party for the ages.
The Hangover Part III star Justin Bartha is engaged, according to People.
The 34-year-old actor is reportedly set to marry personal trainer Lia Smith. The couple's relationship first became public on New Year's Day when they were snapped lounging on a beach in Hawaii.
Bartha, who also stars in NBC's The New Normal, has previously been linked to Scarlett Johansson and Ashley Olsen.