Actor Rob Lowe is gushing over his wife of 31 years!

Sheryl Berkoff and Lowe celebrated their wedding anniversary on Friday. "Your love has made my world. You are as beautiful, knowledgeable, fascinating, kind, and hilarious as you were so many glorious years ago," Lowe captioned his Instagram post.

"Partners in love for life!!

Rob Lowe, Sheryl Berkoff

Rob Lowe and wife Sheryl Berkoff celebrated their 31st wedding anniversary on Friday. (Photo by Arnold Jerocki)

In the post, Berkoff posed in the black and white picture as she hugged herself. She wore black sunglasses with an over-sized cardigan in the photo.

ROB LOWE CELEBRATES 31 YEARS OF SOBRIETY: 'I WANT TO GIVE THANKS'

Berkoff shared her own special moment with Lowe on Instagram to celebrate 31 years together. "Love is always. Celebrating 31 years. Blessed and grateful. Happy Anniversary xoxo," she wrote alongside a black and white image of the duo.

Lowe and Berkoff met in 80s after they were set up on a blind date. They share two sons: Michael, 29, and John, 27.

Rob Lowe family

Lowe and Berkoff share two sons: Michael, 29, and John, 27. (Photo by Jeffrey Mayer)

John and Lowe both have been on their own journeys in sobriety. In January, John credited his father for helping him overcome his addiction to alcohol.

John revealed that his close-knit relationship with the 58-year-old was invaluable during his late teens and early college years.

"On the most personal level possible, when I was struggling with addiction, he was always there for me," the 27-year-old told People magazine. "I credit that with being one, if not the main, reason I’m sober and living and healthy lifestyle."

Rob and John Lowe

Rob said he was "proud" of his son John Lowe when he reached two years of sobriety in April 2020. (Photo by Charley Gallay)

Lowe himself struggled with addiction in his early years especially as he skyrocketed to fame. The patriarch will celebrate 32 years of sobriety in May.

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Today, John lives in Los Angeles with his older brother Matthew, who is a lawyer.

"When you consider what [my dad] went through in his 20s, his meteoric rise and some turbulence, and being in the public eye for decades… To come out a family man, a really, really good father, a really, really strong husband, and just a fun, kind guy to be around, that’s the day-to-day example he sets," said John.

Rob Lowe

Lowe has been sober for 32 years. (Photo by Paul Archuleta)

John shared that there was never a moment when Lowe didn’t offer love and steady support, which was "majorly instrumental."

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"He never gave up on me," John explained. "I have a little over three and a half years [of sobriety] now, but when I took my first-year chip, he and I spoke at a [12-step] meeting in front of 200 people. And it was one of the most profound experiences of my life."

Fox News' Stephanie Nolasco contributed to this report.