Ashton Kutcher is usually a pretty private person.
He captioned the Twitter photo, "Sunset #nofilter."
And while both Hollywood stars are in the dark, you can clearly tell that it's Kunis and Kutcher engaging in a late-night smooch.
The Two and a Half Men actor rarely flaunts his relationship with his former That '70s Show costar on his social media page, but the snapshot was clearly too cute to withhold.
Things seem to be getting quite serious between the genetically gifted stars.
Both were spotted over the weekend attending Kunis' brother's wedding in St. Petersburg, Fla.
Neither have announced any plans to tie the knot any time soon, but they do seem to be comfortable standing on the aisle together!
"Mila wore a gold band on her engagement ring finger but it didn't have a diamond, just a simple gold band similar to a wedding band," a source told E! News at the time. "Mila was very happy for her brother and his wife. During the ceremony, she stood at the altar and seemed very focused on the vows."
Kunis has been spotted multiple times with that gold band on that finger over the last several months, but at some point before hitting the aisle she moved it to her right hand.
The source added that the couple looked "totally in love and inseparable at the wedding."