Charlie Sheen is engaged to porn star girlfriend, Brett Rossi.

This will be the fourth time Sheen will walk down the aisle after proposing to Rossi, his porn star girl, during a romantic Hawaii getaway. He proposed to her during the Valentine's weekend.

On Feb. 15, Sheen proposed to Rossi in Hawaii as the couple posed for a local photographer in Hawaii after the proposal. TMZ got a copy the photographs.

Rossi confirmed the engagement to E! News.

"Yes! We are engaged! He even was a gentleman and got down on one knee," she said.

"I was not expecting it at all. We had a beautiful Valentine's day and he proposed to me early this morning after we watched the sun rise."

Rossi was happy about the engagement ring that Sheen gave her on the day.

"The ring is classic and beautiful, but I don't have any photos to share just yet. This is the happiest moment of both our lives. He's my best friend and my soulmate."

Rossi hinted the engagement a day before the proposal in Twitter.

Happy Valentine's day to the love of my life & my best friend! Everyday is Vday when I'm with you @charliesheen