Charlie Sheen is heading down the aisle for a fourth time.

According to his publicist Jeff Ballard, the Anger Management star proposed to his girlfriend - porn star Brett Rossi - yesterday (Valentine's Day) while in Hawaii.

Sheen took to Twitter to eccentrically confirm the news himself, addressing Rossi by her nickname, Scottie:

With all due respect to Donna –
that maiden Klay-Vinn was annulled.
Therefore,
if "three"
truly is a charm;
The mashup/acronym
of the real CS,
(Charlie & Scottie)
HAS to be;
"Char-M-stee..."
xox
c&s

The 48-year-old also shared her excitement about the engagement: "Yes! We are engaged! He even was a gentleman and got down on one knee. 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. 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."

There's no date yet as to when the pair plan to officially get hitched.

(FYI - You can also follow VIP Breakdown on Twitter.)