The actor and musician welcomed his first child with wife Bianca Rodrigues Grimes in October 2024

Luke Grimes earned recognition for his portrayal of Kayce Dutton on Yellowstone, but being a father to his son is the most important role in his life.

The Fifty Shades of Grey actor always looked forward to parenthood. “I knew one day I wanted to start my own family,” he told PEOPLE in November 2024. “And I knew that that was going to be where the real happiness came from. The other stuff was just going to pay the bills.”

Luke’s vision came to fruition when he and his wife, Bianca Rodrigues Grimes, welcomed a baby boy in October 2024. He called the experience “life-changing,” which has taught him important life lessons, like trying to be as “in the moment as possible.”

The couple have kept their son relatively private — keeping his name and birthday out of the public eye — but they share little glimpses into his life, interests and personality. Luke can’t seem to help it, as he told Entertainment Tonight that he’s “madly in love with the little guy.”

Here’s everything to know about Luke Grimes’ son.

Luke and Bianca revealed they were expecting in August 2024

When Bianca was about six months along, she revealed on Instagram that she and Luke were expecting their first child. On Aug. 4, 2024, the Brazilian model posted a photo on Instagram of the silhouette of her large baby bump in a window.

“Can’t wait to meet you little one ❤️,” she captioned it.

At the time, the couple didn’t announce the sex of their baby until he was born.

Luke’s son was born in October 2024

Bianca revealed the birth of their son on Oct. 9, 2024, posting a sweet photo of her holding the sleeping baby. “Welcome to the world little man 💙,” she wrote on Instagram.

The following week, Bianca shared another look at him, this time with Luke wrapping his arms around them. “And then there were 3 🫂,” she penned.

Luke spoke to ENTERT when his son was about a month old and expressed that he “had changed everything in every way possible.”

“I think people talk about your heart expanding a little bit every day, and it’s so true,” he said in November 2024. “It’s like there’s a love growing inside of me that I didn’t know I was capable of, and it’s incredible and it’s scary because you have so much more skin in the game.”

He is growing up in Montana

After living in Montana while filming Yellowstone, Luke bought a home there with his wife.

“I never really spent a ton of time here, and then during the show, coming up here for months at a time, I just sort of fell in love with it,” he told the Ravalli Republic in October 2024. “And after long enough, I just decided that I was a lot happier here, and my wife and I decided that this is where we wanted to live and raise a family.”

Baby Grimes may be growing up in the mountains, but if he ever wants a change of scenery, he can simply take the family’s Airstream trailer, which Luke and Bianca use to travel all over the place. The adventurous pair have visited the Grand Tetons and Sedona in the past.

He brought his parents closer in their relationship

In July 2023, Luke described himself to USA Today as a “very married person” who “loves his wife to death” and knew he’d be with her “forever,” but their love only got stronger as a result of becoming parents together.

“It’s brought me and my wife close in a way that I didn’t know we could be,” he elaborated to PEOPLE in November 2024. “There’s another level in the way that we love each other and how we have to be a team for this little guy.”

He will “heavily influence” his dad’s future music

In addition to being an actor, Luke is a musician who released his first EP in October 2023 and his first full self-titled album in March 2024, just months before becoming a dad.

Now that his perspective on life has changed as a father, he expects his music will follow suit. “It will be very heavily influenced by having my son around,” he told PEOPLE in November 2024. “That’s the biggest influence in my life right now.”

Luke added that the new experiences might encourage him to ”be honest with how [he feels] and … see what comes out of that.”

Luke’s son supported him at some of his biggest performances

At only a few weeks old, Baby Grimes joined his mom at the iconic Ryman Auditorium in Nashville on Nov. 14, 2024, to watch his dad perform.

Bianca posted a photo of the baby boy wearing large noise-reduction earmuffs to protect his ears while Luke performed on stage. “Daddy played the Ryman!!!” Bianca captioned the shot.

A day later, Luke took on an even bigger stage at The Grand Ole Opry and he used the opportunity to introduce his son to the world.

“I want to bring out two people that are very important to me. Without them, there’d be no music in my life,” Luke said in a video from Good Morning America.

Bianca then walked out on the stage with their baby. “I just wanted y’all to meet him and I wanted him to stand in the circle for a second,” Luke continued.

The artist went on to call 2024 “the greatest year of [his] life,” and proved it with a heartfelt photo of his son looking at him while at the Opry.

Luke hopes his son will also be a musician

Luke isn’t sure whether his son “likes” his music, but he could at least tell ET that the baby doesn’t cry when it comes on.

Luke hopes music will be something they bond over when Baby Grimes is a little older, and he’ll do what he can to make sure that happens.

“[It] would be great if he became a musician,” Luke said in November 2024. “He can be whatever he wants, but he will definitely be getting guitars and drum sets and things for birthdays very early on.”