Blue Bloods star Andrew Terraciano has finally opened up about passing down the role of Sean Reagan after the character was recast in the Boston Blue spinoff.
“It’s beautiful because you’ll always remember every single line and every day that you had the opportunity to be that character,” Terraciano, 22, exclusively told Us Weekly about his time on the hit CBS series. “It doesn’t mean for even a second that somebody else can’t go and do something beautiful with it.”
Terraciano expressed gratitude for his time on Blue Bloods. “I got the joy of playing Sean, and I got to send him off into the world,” he noted. “Now somebody else gets that joy. We’re both getting to show what we do and then send Sean off into the world.”
CBS viewers have gotten very familiar with Terraciano after he got his start playing Donnie Wahlberg‘s onscreen son. The actor appeared in nearly 300 episodes from 2010 to 2024 before the show came to an end. Blue Bloods expanded into Boston Blue, but the role of Sean was recast with newcomer Mika Amonsen.
Boston Blue’s Recasting of Donnie Wahlberg’s Son From ‘Blue Bloods’ Explained
“I had somebody call me — actually the day that I was graduating — and they had spoken to my mom and she called me [crying]. They were like, ‘They might be looking for a different Sean,’” Terraciano recalled how he learned the news initially. “Shortly after we got the news, Donnie called me. It was a really beautiful moment of getting to hear from an old friend but also somebody that you respect so much and have learned so much from.”
Terraciano appreciated hearing from Wahlberg, telling Us, “We had such an amazing experience on Blue Bloods that when we talk we’ll always be friends and family first. I’m happy that there are so many other people that now get to share in that amazing experience.”

While Terraciano has yet to watch Boston Blue as he focuses on his studies — he is looking forward to checking in.
“I’m going to give it the time and the respect that it deserves,” he noted. “[But in terms of returning in some capacity] I said it to Donnie on the phone. If he says the word, I’ll be there. Not just with Blue Bloods or Boston Blue but with anything in life.”
As Boston Blue has proven to Us, Sean Reagan’s legacy on Blue Bloods has made him beloved to the fans. Terraciano wasn’t expecting the outpouring of love that ensued once he wrapped up his run in the fan favorite role — but he is grateful for the support now.
“I can’t say that I expected it but I appreciate it,” he shared. “It’s so meaningful to know that people love the character that I got to share in creating. I didn’t expect it to say the least.”
When Us spoke to Amonsen in a separate interview, he shared the way he wanted to pay tribute to Terraciano, who was grateful for the thought.
“I appreciate it because not only has there been such an outcry of love from the community but there’s also a very clear love coming to the show,” he explained. “It’s hundreds if not thousands of people who depend on their livelihood for a show to be made. It really is amazing that part of that character remains. Somebody can look back and say, ‘I want to pay homage to that. I want to respect that and I want to work on making something beautiful.’”
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Terraciano made it clear that he walked away from the Blue Bloods set with years-worth of meaningful memories.
“The role provided me with such an insight into not only my own life but the lives of so many others. Because every time that you’re acting, you are learning so much about yourself and about the other person,” he explained. “So when you act with the same people for so long, you get such a deep understanding and you develop such a love for them.”

In addition to Wahlberg, Terraciano got to share the screen with costars such as Tom Selleck, Bridget Moynahan, Len Cariou, Will Estes, Marisa Ramirez and Vanessa Ray.
“If they had asked us, I’m sure every single person in the cast would have happily stayed [on Blue Bloods] for the rest of our lives. When we found out that it was the end, I don’t think any of us really let ourselves accept for even a moment that it was a real thing that was ending,” he told Us. “When we had our last dinner scene, we just sat there. For half an hour we just went around the table telling the same old jokes that we had a thousand times before and asking the same questions that we had a thousand times before. None of us were willing to be the first to get up.”
For Terraciano, Blue Bloods provided him with a TV family. He recalled to Us how “emotionally devastating” it felt to film the finale — and how the cast has remained in each other’s lives since then.
‘Blue Bloods’ Cast Has Changed a lot From Season 1 to Season 14: A Look Back
“It was coming to terms with the thought that this opportunity is changing very, very significantly. But because of having had that opportunity, you are all getting propelled into the future in such a beautiful way,” he recalled. “I’m still in touch with a lot of people from the cast and crew. I speak to them fairly often. I’ve made a lot of friends through Blue Bloods that I will never lose.”
The hit CBS series also gave him the role of a lifetime.

“After knowing these people for 15 years, you go out into the world with everything that they’ve given you and you hope that you’ve given them something,” he gushed. “You hold them in your heart and that they’re never gone. It was a weird kind of grief — but Sean had grown into his own thing.”
He continued: “Sean had become who he needed to be by the end of the show. So I was happy to send a character off into the world and I was happy to send my loving friends off into the world.”
Terraciano is currently getting his Masters — but he is also looking forward to other opportunities that may come his way.
“At the end of last spring, I got the fantastic opportunity to work in a dear friend director Sabrina Carlier’s rendition of Annie Baker’s The Antipodes. Not only did I have that amazing opportunity that was my first play that I’ve ever been in but it really pulled me into the theater world,” he explained. “It showed me how much love I have for all forms of acting. I helped produce a friend’s short film recently, and I look forward to every opportunity that I get to act.”
He continued: “You get a passion and you can’t get rid of it to continue to act and continue to participate in creating in any way, shape or form. I would love more than anything to be an actor for the rest of my life. But I’m a huge Star Wars fanatic so I would really do anything [in that universe]. And I would love to try out a sitcom.”
Blue Bloods is streaming on Paramount+.
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