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Nathan Andersen: Everything to Know About A. J. Cook’s Husband

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54 minutes ago

September 19, 2026

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Nathan Andersen: Everything to Know About A. J. Cook’s Husband

Nathan Andersen is best known as the husband of actress A. J. Cook. She plays Jennifer “JJ” Jareau on the popular TV show Criminal Minds. But Nathan has an interesting life story of his own.

He is a businessman and clothing designer. He also loves travel and outdoor life. Nathan helped start a clothing brand called Walter Sky. His love for travel and simple clothes helped him build the brand.

Nathan is also a husband and father of two boys. He has faced some hard times in life. In 2019 he shared the good news that he was cancer-free. His story has many interesting parts.

Who Is Nathan Andersen?

Nathan Andersen is an American businessman and clothing designer. Many people know him because he is married to A. J. Cook. Still Nathan has built his own career away from his wife’s TV fame.

Nathan is the founder and designer of Walter Sky. His brother Wesley Andersen is also part of the company. They wanted to make simple and useful clothes for people who enjoy travel and outdoor life.

Nathan likes to keep his personal life private. He does not chase Hollywood fame. Instead he enjoys spending time with his family. He also loves travel nature and outdoor trips.

Nathan Andersen’s Early Life

Nathan Andersen was reportedly born on May 25 1978 in the United States. Based on this reported birth date he is 48 years old in 2026. His zodiac sign is Gemini.

Nathan loved being outside when he was a child. He enjoyed climbing and exploring new places. He also liked collecting different things. His family gave him the freedom to enjoy these simple adventures.

His love for nature stayed with him as he grew older. Nathan still enjoys mountains beaches and wild places. This love of travel later became an important part of his work and clothing ideas.

Nathan Andersen’s Parents and Brother

Nathan grew up in a family that enjoyed sports and adventure. Reports say his father was an athlete when he was younger. He later became a businessman who worked around the world.

Nathan’s mother also enjoyed an active life. She loved skiing and adventure. His family supported his love of climbing travel and nature. This helped Nathan become confident about trying new things.

Nathan has a brother named Wesley Andersen. The two brothers later became business partners. Wesley helped Nathan build Walter Sky. Today they share their love of clothing travel and business through the brand.

Nathan Andersen’s Education and College Years

Nathan Andersen went to Utah Valley University. Reports say he studied film there. At that time Nathan was interested in movies and the entertainment world. But college also changed his personal life.

Nathan met A. J. Cook while they were students. They reportedly met in a film class. At the time they were simply two young students trying to decide what they wanted from life.

This happened before Cook became famous for Criminal Minds. Nathan knew her before she became a big TV star. Their simple college meeting slowly grew into a serious love story.

How Nathan Andersen Met A. J. Cook

Nathan Andersen and A. J. Cook first got to know each other during college. They spent time together and soon became close. Their friendship slowly turned into love.

Reports say Cook later moved to Salt Lake City as their relationship became more serious. She was still trying to build her acting career. Nathan was also working out what he wanted to do in life.

Their relationship stayed strong as their lives changed. Nathan was with Cook before she became famous as JJ. Their young college romance later became a marriage that has lasted for many years.

Nathan Andersen and A. J. Cook’s Marriage

Nathan Andersen and A. J. Cook married on August 3 2001. They were both young at the time. Cook later joked that they were almost like “babies” when they got married.

Their wedding came years before Cook joined Criminal Minds in 2005. Her acting career soon became very busy. Nathan also followed his own career while supporting the family they were building together.

In August 2026 Nathan and Cook reached 25 years of marriage. During those years they became parents and faced both happy and hard times. They have also shared sweet family moments with fans.

Nathan Andersen’s Career Before Walter Sky

After college Nathan tried working in Hollywood. He soon learned that the entertainment world was not the right place for him. He wanted to find work that felt more natural to him.

Nathan later joined a friend who was building a new company. He gave his time and money to the business. Reports say he stayed with the company for almost ten years and learned a lot about business.

Still Nathan wanted something different. He loved travel outdoor life and clothing. He started thinking about making clothes that could work well during trips and adventures. This idea would soon change his career.

Nathan Andersen and Walter Sky

Nathan later turned his idea into Walter Sky. He wanted to make simple clothes that people could wear in many places. Travelers would not need to carry lots of different clothes for every trip.

Nathan became interested in fabrics and clothing design. He tested different ideas and worked hard to improve them. Building the company was not easy. He faced many problems and heard plenty of “no” answers.

Nathan did not give up. His brother Wesley joined him in the business. Together they helped build Walter Sky. Nathan became its founder and designer while turning his love of travel into a real career.

Nathan Andersen’s Love of Travel and Adventure

Travel has always been a big part of Nathan Andersen’s life. He loved being outside when he was young. As an adult he still enjoys mountains beaches canyons and places far from busy city life.

Nathan also enjoys camping and road trips. He has shared photos from his travels on social media. In one trip he rode a motorcycle through Sierra National Forest. The trip covered about 400 miles.

His love of travel also helped shape Walter Sky. Nathan wanted clothes that could work during many kinds of trips. He wanted fewer clothes that were simple useful and easy to pack.

Nathan Andersen’s Children and Family Life

Nathan Andersen and A. J. Cook have two sons. Their first son is Mekhai Allan Andersen. He was born in 2008. Their second son is Phoenix Sky Andersen who was born on July 23 2015.

Nathan seems to enjoy the simple side of being a dad. Over the years he has shared fun family moments online. One old post showed Phoenix washing a car. Nathan joked about giving him candy for the work.

The family also enjoys spending time outdoors. Nathan has shared pictures of trips and time in the water with his children. These moments show another side of him away from business and his wife’s acting career.

His Sons’ Special Criminal Minds Connection

Nathan Andersen’s sons have a fun link to their mother’s famous TV show. Both boys appeared on Criminal Minds. They even played the children of A. J. Cook’s character.

Mekhai played Henry LaMontagne. Henry is the son of Jennifer “JJ” Jareau in the show. Phoenix later appeared as Michael LaMontagne. This made Cook’s TV family look a little like her real family.

It is a sweet fact for fans of the show. Cook was acting as JJ while her real sons played JJ’s children. Nathan did not act on the show himself. Still his family became part of its story.

Nathan Andersen’s Cancer Battle and Recovery

Nathan faced a very hard time when he battled cancer. The family did not share many details while he was sick. Nathan has always kept much of his health and private life away from the public.

In September 2019 he shared wonderful news. Nathan posted a photo showing a scar on his neck and said he was cancer-free. It was a huge moment for him and his family after a difficult year.

Some reports have called it thyroid cancer because of his neck scar and comments under his post. However Nathan did not clearly confirm the cancer type in the material available. It is safer to simply say he survived cancer.

A. J. Cook Supported Nathan During Cancer

A. J. Cook also celebrated her husband’s recovery. She shared an emotional message after learning that Nathan was cancer-free. Her words showed how difficult the past year had been for their whole family.

Cook wrote that cancer had picked the wrong person to fight. She told Nathan that he had won. She also said it felt as if a huge weight had finally been taken away.

This was more than a happy social media post. It gave fans a small look at what the family had faced together. Nathan’s recovery remains one of the most important parts of his life story.

Nathan Andersen’s Social Media Life

Nathan has used Instagram to share parts of his life. His posts have included travel photos outdoor trips family moments and funny pictures. Older reports said he had more than 30,000 followers.

He has also posted sweet messages about A. J. Cook. At times he has called her “Mamacita.” Other posts have shown their playful side. The couple does not always take life too seriously online.

Nathan once shared another surprising fact. In a 2016 post he showed that he could perform a marriage ceremony. It is a small detail but it shows there is more to him than fashion and travel.

Nathan Andersen’s Net Worth

Nathan Andersen has earned money through business and fashion. He spent years working with a startup before creating Walter Sky. His work as a designer and company founder is an important part of his career.

Some websites have estimated Nathan Andersen’s net worth at around $4 million. However there is no public financial record that proves this amount. Nathan has not publicly confirmed an exact net worth.

For that reason the $4 million figure should only be called an estimate. What we do know is that Nathan has spent many years in business and has built a clothing company around his own ideas.

Final Thoughts

In 2026 Nathan Andersen is still best known to many fans as A. J. Cook’s husband. Yet his own life includes much more. He is a designer businessman traveler husband and father.

Nathan has long kept a lower profile than Cook. He does not appear to seek the same public attention that comes with acting. His public life has focused more on family outdoor trips and Walter Sky.

Nathan and Cook reached 25 years of marriage in August 2026. Their two boys are also much older now. After years of career changes parenthood travel and a serious health fight Nathan continues to live a fairly private life.