This could be a bachelor party for the ages.
PICS: Most Memorable Celeb Weddings of All Time
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.
Related stories on ETonline.com:Brad On Drug Use: I Thought I Did Too Much DamageThe Doors Founding Keyboardist Passes Away
- 10 hours ago Check out 30 reasons we love Adele!
- 15 hours ago 2018 Academy Award Nominees -- See their reactions
- Jan. 20, 2018 See all the stars at the 2018 PGA Awards!