Mila Kunis kept her promise and made one Marine hero a very happy man Friday night. As the Friends with Benefits star said she would, Kunis attended the Marine Corps Ball on the arm of Sgt. Scott Moore.

The event, celebrating the 236th birthday of the Marine Corps, was held at the Greenville, NC Convention Center.

As RadarOnline.com previously reported, Sgt. Moore, in full combat gear, asked the actress to be his date via a video he posted on YouTube.

Mila accepted and Tweeted about how "happy" she was to be going.

It was after her acceptance that another Marine, Cpl. Kelsey De Santis, asked Justin Timberlake to be her date at a Marine gala held last weekend in Richmond, Virginia. He was also an actor of his word, and attended.

Sgt. Moore -- "you can call me Scotty" he told Mila on his video -- is a member of the 3rd Battalion, 2nd Marines, a unit that lost seven of its men during its recent deployment in Afghanistan.

Marine spokesman Sgt. Scott Sasser said Mila and Moore enjoyed the night.  “It’s good that she got to come on a date with a Marine,” he said.

Justin Timberlake keeps his promises.

The singer escorted Cpl. Kelsey De Santis to Saturday night's Marine Corps Ball in Richmond, Virginia.

JT was dapper in his tuxedo. Cpl. De Santis, wearing her Marine Corps dress uniform, met the singer at his hotel. Once at the ball, she changed into a sexy low cut silver mini.

PHOTOS: Justin & Jessica Take Toronto Bike Ride

Timberlake didn't just make the event a photo op. He stayed through the evening with de Santis, who famously invited Justin to be her date via a YouTube posting. Way to go!

PHOTOS: Justin Timberlake’s Sexiest On-And-Off Screen Ladies

RELATED STORIES:

Justin Timberlake Reminds Us He's Still A Singer

Justin Timberlake And Jessica Biel Are Dating Again!

Justin Timberlake Back In New Music Video

Justin Timberlake sang it best: What goes around comes all the way back around.

Just days after he persuaded his Friends With Benefits co-star Mila Kunis into accepting a date with a marine that asked her to a Marine Corps Ball via YouTube, the Sexy Back singer has been asked out himself by a female marine named Cpl. Kelsey De Santis.