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Kristin Cavallari and Jay Cutler celebrate 3rd anniversary — see the photo

The former "Laguna Beach" star married NFL quarterback Jay Cutler in 2013.
/ Source: TODAY

Romance is in the air this week for Kristin Cavallari and her hubby Jay Cutler!

The two enjoyed a night out on the town to mark their third wedding anniversary on Tuesday, and the "Laguna Beach" alum marked the occasion with an Instagram photo of the happy couple in what appears to be the back of a limousine.

"I truly love him more and more everyday!" she gushed in the photo's caption.

Cavallari, 29, married the Chicago Bears quarterback, 33, in 2013 after dating on and off for two years. The couple have three kids together — sons Camden, 3, and Jaxon, 2, and daughter Saylor, 6 months.

The former reality star shared secrets to their marital success in her first book, "Balancing in Heels: My Journey to Health, Happiness, and Making it all Work," published in March.

Kristin Cavallari's book Balancing in Heels
Kristin Cavallari's book Balancing in

The candid tome looks back at her time on "The Hills" and "Laguna Beach" and also celebrates her life today as a wife, mom and businesswoman.

RELATED: Kristin Cavallari reveals therapy is key for relationship with husband Jay Cutler

One thing Cavallari believes helps relationships is couple's therapy. She makes no secret of the fact that she and Cutler keep their marriage strong with counseling.

"I credit [our therapist] for saving our relationship," Cavallari revealed in the book. "She opened up our eyes to the other person's perspective and gave us great tools for communication."

She added, "We still periodically see her to this day."