Charlie Sheen proposed to his former adult star girlfriend Brett Rossi on Saturday morning after he flew her to Hawaii on a private jet.
He then bragged about the proposal to a local photographer, who snapped some pictures of the couple.
According to sources close to Sheen, the engagement is for real, TMZ.com reported.
Sheen first married in 95 to model Donna Peele but they split up a year later.
In 2002, the 48-year-old actor married actress Denise Richards but she filed for divorce two years later while she was six months pregnant with the couple's second child.
Brooke Mueller was the third person to get married to Sheen but they too divorced in 2011 after a tumultuous relationship.