Charlie Sheen -- Ex-Porn Star GF Brett Rossi Is the Love of My Life

No more angels ... no more goddesses ... Charlie Sheen says his new ex-porn star GF is the love of his life ... and he's dead serious about it.

The woman who stole the Warlock's heart is 24-year-old Brett Rossi -- who he's only been dating for the past couple of weeks.

But Sheen says he's downright smitten -- telling TMZ:

"I've been on a lifelong journey, a 1000 century quest, in search of the better and missing half of my heart and my brane (sic)."

"That expedition is now (rated) 'a major success' and beyond the valley of dunn-ski complete. The MaSheen wins again."

Sheen told us, "This is very serious" ... but it's unclear if he's pondering marriage.

Stay tuned.