Report: Heidi Montag and Spencer Pratt Elope in Mexico
"The minute we said our vows, I couldn't stop crying," Montag, 22, said.
The clandestine ceremony took place at One & Only Palmilla Resort, just outside Cabo San Lucas.
In his vows, 25-year-old Pratt reportedly said, "Heidi, from the moment you came into my life, I knew my life would never be the same without you. You are the light in my life like the sun to the Earth. Your loving warmth makes me want to be a better person. Being with you, I feel complete. I'm honored to even be able to call you my wife. You are the most amazing, loving and caring woman on this planet. I will love you forever and always."
The couple's on-again, off-again romance was chronicled on "The Hills" and got engaged last year.
They're set to guest star on an episode of "How I Met Your Mother" in January.