Riley Keough and Alex Pettyfer, the once-rumored engaged couple may have gotten back together in 2013. After the recent Robert Pattinson romance rumors, the actress, 24, held hands with her ex-boyfriend, 23, at 'The Butler' premiere on Monday night.

According to Perez Hilton, the two had a major public display of affection at the Hollywood film debut at Regal Cinemas L.A. Live in Los Angeles.

The adorable twosome, who were engaged in early 2012, looked very cozy and were very lovey-dovey with each other in the VIP area, a source told the celebrity blog site.

"There was definitely warmth between Riley and Alex," the source said. "They were laughing together and smiling at each other. They definitely came together."

The onlooker added that Keough was wearing a ring on her left finger, suggesting that an engagement could be back on for the former couple. But, there is no visual proof that the actress had on the special sparkler.

The sighting was the second time that the former flames had been spotted in public in the last few weeks. But the latest sighting could confirm a brewing on-again romance between the pair and put the Pattinson rumors to sleep.

After Kristen Stewart and Pattinson latest split, the rumor mill went crazy with speculation that the "Twilight" star was dating the actress, who is Elvis Pressley's granddaughter.

Though rampant rumors paired Keough with Pattinson, JustJared reported that the speculation was unfounded. 

And now that Keough and Pettyfer look hot and heavy again, think they are really back together? Tell us in the comments section below!