Don Johnson has an easy secret to staying handsome and energetic at 74.

"Marry right!" he told People magazine, adding, "A bad marriage will age you."

The "Miami Vice" star has been married to his wife, Kelley Phleger, since 1999. The couple share three children: Atherton Grace, Jasper and Deacon.

In another interview with People earlier this month, Johnson said the keys to his 25-year marriage to Phleger are simple.

DON JOHNSON SAYS THREE THINGS ARE 'KEY' TO HIS LONG-LASTING MARRIAGE

"Oh, we are just so in tune with each other that there's an unspoken, like, trust and kindness and respect with us. And those are the keys," he told the outlet.

In an interview with Parade last year, Johnson called her "an amazing woman."

"Obviously, she’s a saint. I was with Bob Dylan one time, and I was having relationship issues, and Bob looks up at me and goes, ‘Well, see, love is about kindness, trust and respect, isn’t it?’ And that’s the embodiment of Kelley," Johnson said about what makes Phleger perfect for him. "It’s kindness, trust and respect, and we have that with each other. We’re lovers and friends and it’s fun. She’s an amazing woman."

He is also father to a son from his relationship with Patti D’Arbanville, Jesse Wayne Johnson, and daughter Dakota Johnson, from his marriage to Melanie Griffith.

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Johnson and Griffith married when she was 18 in 1976, after first meeting when she was 14. They divorced in November that same year.

They married again in 1989 and remained together until 1996. Johnson also adopted Griffith’s son from her relationship with actor Steven Bauer, Alexander Bauer, per People.

Being a dad is another one of Johnson’s secrets to looking and feeling young.

"You have to exercise, and do it a lot," he told the outlet. "How do you think I got six kids?" adding jokingly, "That I know of, anyway!"

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Johnson’s youthful energy is being put to work, with headlining two projects, Netflix’s "Rebel Ridge" and the new Hulu series "Doctor Odyssey."

Earlier this month, Johnson reflected on the ups and downs of fame during his career-making success on "Miami Vice."

"For a long time, I couldn’t even go anywhere," he told People. 

He continued, "I had to isolate. The [women] know where you are. We had security 24/7."

The intense fandom reminded him of what Elvis Presley must have gone through at the height of his fame.

"One day, I reflected on Elvis and thought, ‘Isn’t this kind of the way Elvis lived and died?’ Not that I’m comparing myself to Elvis, but in terms of him not being able to have a personal life. So I learned to manage it and vowed not to let it imprison me," Johnson said. 

Wedding planning is full of huge decisions for the couple about to be married, including the individuals that they'll want with them at the altar when they exchange their vows and say "I do." 

During a wedding, the bridesmaids and groomsmen typically stand with the couple during the ceremony. The officiant is responsible for conducting the ceremony from beginning to end. 

There are several different routes a couple could go when it comes to choosing an officiant. 

WEDDING VEIL HISTORIES DATE BACK TO ROMAN TIMES; WHY BRIDES STILL WEAR THE HEADPIECE TODAY

They could choose a civil wedding officiant, such as a judge or justice of the peace, a religious officiant, such as a pastor or priest, or the couple could choose a professional officiant to lead their ceremony. 

A growing trend in the wedding industry is for couples to pick a close friend or family member to be the officiant at their wedding. 

For couples who choose this route, there are several steps the friend or family member needs to take in order to be able to take on this task. 

MUST-HAVE INFORMATION ON ANY WEDDING WEBSITE

Below are a few things to keep in mind when asked to officiate a wedding. 

Before anything else, it's important to check state requirements to officiate a wedding.

Registration requirements vary from state to state, so you'll want to properly conduct research on this far in advance so you don't run into any trouble down the line. 

To gather basic information on state requirements, you can do an online search. 

Reach out to the city clerk's or county clerk's office to find out more about the steps that are required of you. 

In order to officiate a wedding, you first must be ordained. 

In many states, the process of getting ordained is quite a simple one that requires just a few clicks online, a fee and a few days to process. 

Some states have one-day marriage officiant certification programs, ideal for family members and friends who wish to officiate a loved one's wedding, but don't plan on officiating others in the future. 

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To get ordained online, Universal Life Church and American Marriage Ministries are two popular places to check.

Being asked to officiate a wedding is a great honor. 

Make sure that you are giving the job the time and commitment it requires. 

As an officiant, you'll want to meet with the couple several times before their big day to get an idea of how they want their wedding ceremony to go. 

During the actual ceremony, the wedding officiant must speak for a fairly long period of time in front of a large group of people. 

Before the big day comes, make yourself as comfortable as possible by brushing up on your public speaking skills. 

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Run through the ceremony often, and take the opportunity to practice in front of others if you can. 

The officiant is traditionally responsible for making sure the marriage license gets filed. 

The time at which a marriage license is valid depends on the state. 

For example, in Tennessee, it's valid for 30 days from when it's issued. 

In Massachusetts, that magic number is 60 days, while it's 90 days in California.

As the wedding officiant, look into the timeline in the state in which the couple chooses to wed, and remind them that this is something they need to get done. 

A marriage license is a document signed by both spouses, the officiant and witnesses in certain states, and legally permits a couple to be married.

Typically, the officiant is responsible for ensuring that this document gets properly filed after the ceremony.