The duo attended Mila's brother's wedding in Florida this weekend and, according to Us Weekly, Ashton even posed for pics with the family after the ceremony.
"Ashton was welcomed by Mila's family," their source spilled. "They seemed very comfortable together. He watched the ceremony from the front row and never took his eyes off of Mila."
Last night, the couple showed some social media PDA when Ashton took to Twitter to share a sweet pic of them mid-kiss.
"Sunset #nofilter," he captioned the photo, which was retweeted over 300 times.
Rumors have been swirling that Ashton and Mila are already secretly engaged and she has been spotted wearing a ring on her ring finger, but no official word from the couple yet.
Do you think Ashton and Mila will get married?