Los Angeles, Jan 18 (IANS): Actor Johnny Depp is said to have popped the question to his girlfriend and "The Rum Diary" co-star Amber Heard "a while ago". His ladylove was recently spotted wearing a huge sparkler on her ring finger.

The couple is yet to confirm their engagement, but an insider has told Us Weekly: "The proposal happened a while ago. She just didn't wear the ring."

Depp, who was earlier in a 14-year long relationship with Vanessa Paradis, has been with Heard for less than two years.

With Paradis, he has two children - Lily-Rose, 14, and Jack, 11.

The "Lone Ranger" star has been married once before to Lori Anne Allison from 1983 to 1985. He's previously been engaged to actresses Jennifer Grey, Sherilyn Fenn and Winona Ryder and he even had a talked-about four-year relationship with supermodel Kate Moss.

Depp and Paradis announced their breakup in June 2012 after 14 years together. A year later, Depp broke his silence about their split.

Shortly after his breakup from Paradis, Depp began dating Heard, whom he met on the set of "The Rum Diary".