Heidi Montag and Spencer Pratt eloped to Mexico, where they wed on Nov. 20, 2008, during season 4 of The Hills

By Aurelie Corinthios
November 21, 2017 02:02 PM

Happy anniversary, Speidi!

For anyone who doubted that the former Hills costars’ love would last, think again: Spencer Pratt and Heidi Montag celebrated their nine-year wedding anniversary on Monday, seven weeks after welcoming their first child, son Gunner Stone.

“It was love at first sight,” gushed Montag, 31, in a heartfelt Instagram post dedicated to her husband. “I knew my life would never be the same. You are my soulmate, my heart, my soul, my best friend, my everything. We have fought through so much to be together.”

“Every moment of it has been such a blessing,” she continued. “I knew I had to follow my heart and have faith in love and in you. Best decision of my life. Thank you so much for our son! This is been the best 11 years of my life. It continues to get better every moment, every day, every year. I love you more than I’ll ever be able to tell you! I didn’t think our love could get deeper until @gunnerpratt arrived! Not only are you the most amazing husband, you are the most amazing father! I can’t wait to see the journey life has in store for us!”

Montag and Pratt, 34, met while filming the popular MTV reality show, which aired for six seasons from 2006-2010 and chronicled the couple’s on-again, off-again relationship — and drama with costar Lauren Conrad, Heidi’s former BFF.

During the fourth season, they eloped to Mexico, where they wed on Nov. 20, 2008. An official wedding ceremony was held months later, on April 25, 2009, in Pasadena, California.

The former reality stars became parents to baby Gunner, their first child, on Oct. 1. He was born weighing 6 lbs., 12 oz., and measured 19 in. long — and Mom and Dad have wasted no time showing him off on a daily basis on social media.

“It’s so funny,” Pratt said on Snapchat last week, filming himself as his son adorably nuzzled into his chest.

“I used to be like, ‘Why do people put their babies on their content?’ Well, now I know,” he continued. “Because we’re obsessed with our babies. And if you don’t like it, you just click to the next story. So forgive me, anyone in the past, that I judged for putting baby content in your story.”